3622687581 has 8 divisors (see below), whose sum is σ = 4909434784. Its totient is φ = 2375532720.

The previous prime is 3622687577. The next prime is 3622687583. The reversal of 3622687581 is 1857862263.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3622687581 - 2² = 3622687577 is a prime.

It is a super-2 number, since 2×3622687581² = 26247730619063263122, which contains 22 as substring.

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 3622687581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3622687583) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9897871 + ... + 9898236.

It is an arithmetic number, because the mean of its divisors is an integer number (613679348).

Almost surely, 2^3622687581 is an apocalyptic number.

It is an amenable number.

3622687581 is a deficient number, since it is larger than the sum of its proper divisors (1286747203).

3622687581 is a wasteful number, since it uses less digits than its factorization.

3622687581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19796171.

The product of its digits is 967680, while the sum is 48.

The square root of 3622687581 is about 60188.7662359015. The cubic root of 3622687581 is about 1535.8317004288.

The spelling of 3622687581 in words is "three billion, six hundred twenty-two million, six hundred eighty-seven thousand, five hundred eighty-one".