634634580 has 48 divisors (see below), whose sum is σ = 1870505280. Its totient is φ = 160328448.

The previous prime is 634634557. The next prime is 634634587. The reversal of 634634580 is 85436436.

It is a super-2 number, since 2×634634580² = 805522100263552800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634634587) 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, 277209 + ... + 279488.

It is an arithmetic number, because the mean of its divisors is an integer number (38968860).

Almost surely, 2^634634580 is an apocalyptic number.

634634580 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

634634580 is an abundant number, since it is smaller than the sum of its proper divisors (1235870700).

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

634634580 is a wasteful number, since it uses less digits than its factorization.

634634580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556728 (or 556726 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 39.

The square root of 634634580 is about 25191.9546681078. The cubic root of 634634580 is about 859.3588966327.

The spelling of 634634580 in words is "six hundred thirty-four million, six hundred thirty-four thousand, five hundred eighty".