634920628888 has 64 divisors (see below), whose sum is σ = 1465744896000. Its totient is φ = 251084230272.

The previous prime is 634920628883. The next prime is 634920628907. The reversal of 634920628888 is 888826029436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634920628883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1819053 + ... + 2139811.

It is an arithmetic number, because the mean of its divisors is an integer number (22902264000).

Almost surely, 2^634920628888 is an apocalyptic number.

It is an amenable number.

634920628888 is an abundant number, since it is smaller than the sum of its proper divisors (830824267112).

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

634920628888 is a wasteful number, since it uses less digits than its factorization.

634920628888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323504 (or 323500 counting only the distinct ones).

The product of its (nonzero) digits is 63700992, while the sum is 64.

The spelling of 634920628888 in words is "six hundred thirty-four billion, nine hundred twenty million, six hundred twenty-eight thousand, eight hundred eighty-eight".