3722506717 has 4 divisors (see below), whose sum is σ = 3722936796. Its totient is φ = 3722076640.

The previous prime is 3722506699. The next prime is 3722506721. The reversal of 3722506717 is 7176052273.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7176052273 = 13 ⋅552004021.

It can be written as a sum of positive squares in 2 ways, for example, as 3476989156 + 245517561 = 58966^2 + 15669^2 .

It is a cyclic number.

It is not a de Polignac number, because 3722506717 - 2⁷ = 3722506589 is a prime.

It is a super-2 number, since 2×3722506717² = 27714112516220236178, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3722506717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3722506747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201784 + ... + 219457.

It is an arithmetic number, because the mean of its divisors is an integer number (930734199).

Almost surely, 2^3722506717 is an apocalyptic number.

It is an amenable number.

3722506717 is a deficient number, since it is larger than the sum of its proper divisors (430079).

3722506717 is an equidigital number, since it uses as much as digits as its factorization.

3722506717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430078.

The product of its (nonzero) digits is 123480, while the sum is 40.

The square root of 3722506717 is about 61012.3488893847. The cubic root of 3722506717 is about 1549.8101351898.

The spelling of 3722506717 in words is "three billion, seven hundred twenty-two million, five hundred six thousand, seven hundred seventeen".