628635426860 has 24 divisors (see below), whose sum is σ = 1508725024800. Its totient is φ = 215532146304.

The previous prime is 628635426799. The next prime is 628635426883. The reversal of 628635426860 is 68624536826.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 628635426796 and 628635426805.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2245126385 + ... + 2245126664.

It is an arithmetic number, because the mean of its divisors is an integer number (62863542700).

Almost surely, 2^628635426860 is an apocalyptic number.

It is an amenable number.

628635426860 is an abundant number, since it is smaller than the sum of its proper divisors (880089597940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

628635426860 is a wasteful number, since it uses less digits than its factorization.

628635426860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4490253065 (or 4490253063 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 56.

The spelling of 628635426860 in words is "six hundred twenty-eight billion, six hundred thirty-five million, four hundred twenty-six thousand, eight hundred sixty".