3658642697 has 8 divisors (see below), whose sum is σ = 3818300040. Its totient is φ = 3501218560.

The previous prime is 3658642693. The next prime is 3658642699. The reversal of 3658642697 is 7962468563.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 14830201 + 3643812496 = 3851^2 + 60364^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3658642697 - 2² = 3658642693 is a prime.

It is a super-2 number, since 2×3658642697² = 26771332768622867618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3658642693) 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, 554954 + ... + 561507.

It is an arithmetic number, because the mean of its divisors is an integer number (477287505).

Almost surely, 2^3658642697 is an apocalyptic number.

It is an amenable number.

3658642697 is a deficient number, since it is larger than the sum of its proper divisors (159657343).

3658642697 is a wasteful number, since it uses less digits than its factorization.

3658642697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116603.

The product of its digits is 13063680, while the sum is 56.

The square root of 3658642697 is about 60486.7150455371. The cubic root of 3658642697 is about 1540.8960177551.

The spelling of 3658642697 in words is "three billion, six hundred fifty-eight million, six hundred forty-two thousand, six hundred ninety-seven".