679757391553 has 8 divisors (see below), whose sum is σ = 688359571200. Its totient is φ = 671165029488.

The previous prime is 679757391491. The next prime is 679757391557. The reversal of 679757391553 is 355193757976.

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 679757391553 - 2³³ = 671167456961 is a prime.

It is a super-2 number, since 2×679757391553² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (679757391557) 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, 2314993 + ... + 2592046.

It is an arithmetic number, because the mean of its divisors is an integer number (86044946400).

Almost surely, 2^679757391553 is an apocalyptic number.

It is an amenable number.

679757391553 is a deficient number, since it is larger than the sum of its proper divisors (8602179647).

679757391553 is a wasteful number, since it uses less digits than its factorization.

679757391553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4908791.

The product of its digits is 187535250, while the sum is 67.

The spelling of 679757391553 in words is "six hundred seventy-nine billion, seven hundred fifty-seven million, three hundred ninety-one thousand, five hundred fifty-three".