5657692649 has 4 divisors (see below), whose sum is σ = 6465934464. Its totient is φ = 4849450836.

The previous prime is 5657692619. The next prime is 5657692669. The reversal of 5657692649 is 9462967565.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9462967565 = 5 ⋅1892593513.

It is a cyclic number.

It is not a de Polignac number, because 5657692649 - 2²⁴ = 5640915433 is a prime.

It is a super-2 number, since 2×5657692649² = 64018972221097274402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5657692619) 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, 404120897 + ... + 404120910.

It is an arithmetic number, because the mean of its divisors is an integer number (1616483616).

Almost surely, 2^5657692649 is an apocalyptic number.

It is an amenable number.

5657692649 is a deficient number, since it is larger than the sum of its proper divisors (808241815).

5657692649 is an equidigital number, since it uses as much as digits as its factorization.

5657692649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808241814.

The product of its digits is 24494400, while the sum is 59.

The square root of 5657692649 is about 75217.6352260559. The cubic root of 5657692649 is about 1781.8854583646.

The spelling of 5657692649 in words is "five billion, six hundred fifty-seven million, six hundred ninety-two thousand, six hundred forty-nine".