6404265457 has 4 divisors (see below), whose sum is σ = 6741332080. Its totient is φ = 6067198836.

The previous prime is 6404265451. The next prime is 6404265473. The reversal of 6404265457 is 7545624046.

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.

It is a cyclic number.

It is not a de Polignac number, because 6404265457 - 2¹⁵ = 6404232689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6404265451) 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, 168533283 + ... + 168533320.

It is an arithmetic number, because the mean of its divisors is an integer number (1685333020).

Almost surely, 2^6404265457 is an apocalyptic number.

It is an amenable number.

6404265457 is a deficient number, since it is larger than the sum of its proper divisors (337066623).

6404265457 is a wasteful number, since it uses less digits than its factorization.

6404265457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337066622.

The product of its (nonzero) digits is 806400, while the sum is 43.

The square root of 6404265457 is about 80026.6546658049. The cubic root of 6404265457 is about 1857.0479105449.

The spelling of 6404265457 in words is "six billion, four hundred four million, two hundred sixty-five thousand, four hundred fifty-seven".