6457920579 has 24 divisors (see below), whose sum is σ = 10348603200. Its totient is φ = 3847550640.

The previous prime is 6457920563. The next prime is 6457920587. The reversal of 6457920579 is 9750297546.

6457920579 is a `hidden beast` number, since 6 + 45 + 7 + 9 + 20 + 579 = 666.

It is not a de Polignac number, because 6457920579 - 2⁴ = 6457920563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6457920379) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 546969 + ... + 558650.

It is an arithmetic number, because the mean of its divisors is an integer number (431191800).

Almost surely, 2^6457920579 is an apocalyptic number.

6457920579 is a deficient number, since it is larger than the sum of its proper divisors (3890682621).

6457920579 is a wasteful number, since it uses less digits than its factorization.

6457920579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105695 (or 1105692 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 54.

The square root of 6457920579 is about 80361.1882627429. The cubic root of 6457920579 is about 1862.2196281655.

It can be divided in two parts, 64579 and 20579, that added together give a palindrome (85158).

The spelling of 6457920579 in words is "six billion, four hundred fifty-seven million, nine hundred twenty thousand, five hundred seventy-nine".