628505593979 has 8 divisors (see below), whose sum is σ = 656345527200. Its totient is φ = 600708461056.

The previous prime is 628505593951. The next prime is 628505593987. The reversal of 628505593979 is 979395505826.

628505593979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-628505593979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628505593279) 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, 10670054 + ... + 10728795.

It is an arithmetic number, because the mean of its divisors is an integer number (82043190900).

Almost surely, 2^628505593979 is an apocalyptic number.

628505593979 is a deficient number, since it is larger than the sum of its proper divisors (27839933221).

628505593979 is a wasteful number, since it uses less digits than its factorization.

628505593979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21400149.

The product of its (nonzero) digits is 183708000, while the sum is 68.

The spelling of 628505593979 in words is "six hundred twenty-eight billion, five hundred five million, five hundred ninety-three thousand, nine hundred seventy-nine".