3694250561 has 4 divisors (see below), whose sum is σ = 3704155092. Its totient is φ = 3684346032.

The previous prime is 3694250551. The next prime is 3694250627. The reversal of 3694250561 is 1650524963.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2356519936 + 1337730625 = 48544^2 + 36575^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3694250561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3694250551) 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, 4951706 + ... + 4952451.

It is an arithmetic number, because the mean of its divisors is an integer number (926038773).

Almost surely, 2^3694250561 is an apocalyptic number.

It is an amenable number.

3694250561 is a deficient number, since it is larger than the sum of its proper divisors (9904531).

3694250561 is an equidigital number, since it uses as much as digits as its factorization.

3694250561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9904530.

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 3694250561 is about 60780.3468318502. The cubic root of 3694250561 is about 1545.8788283224.

The spelling of 3694250561 in words is "three billion, six hundred ninety-four million, two hundred fifty thousand, five hundred sixty-one".