634419680 has 24 divisors (see below), whose sum is σ = 1498816872. Its totient is φ = 253767808.

The previous prime is 634419659. The next prime is 634419697. The reversal of 634419680 is 86914436.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1982402 + ... + 1982721.

It is an arithmetic number, because the mean of its divisors is an integer number (62450703).

Almost surely, 2^634419680 is an apocalyptic number.

It is an amenable number.

634419680 is an abundant number, since it is smaller than the sum of its proper divisors (864397192).

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

634419680 is a wasteful number, since it uses less digits than its factorization.

634419680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3965138 (or 3965130 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 634419680 is about 25187.6890563624. The cubic root of 634419680 is about 859.2618869615.

The spelling of 634419680 in words is "six hundred thirty-four million, four hundred nineteen thousand, six hundred eighty".