634607785902 has 16 divisors (see below), whose sum is σ = 1270564377552. Its totient is φ = 211311127680.

The previous prime is 634607785901. The next prime is 634607785907. The reversal of 634607785902 is 209587706436.

634607785902 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634607785901) 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, 56194123 + ... + 56205414.

It is an arithmetic number, because the mean of its divisors is an integer number (79410273597).

Almost surely, 2^634607785902 is an apocalyptic number.

634607785902 is an abundant number, since it is smaller than the sum of its proper divisors (635956591650).

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

634607785902 is a wasteful number, since it uses less digits than its factorization.

634607785902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112400483.

The product of its (nonzero) digits is 15240960, while the sum is 57.

The spelling of 634607785902 in words is "six hundred thirty-four billion, six hundred seven million, seven hundred eighty-five thousand, nine hundred two".