634863460 has 48 divisors (see below), whose sum is σ = 1662192000. Its totient is φ = 197879040.

The previous prime is 634863409. The next prime is 634863461. The reversal of 634863460 is 64368436.

It is a super-2 number, since 2×634863460² = 806103225686343200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (634863461) 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, 204585 + ... + 207664.

It is an arithmetic number, because the mean of its divisors is an integer number (34629000).

Almost surely, 2^634863460 is an apocalyptic number.

It is an amenable number.

634863460 is an abundant number, since it is smaller than the sum of its proper divisors (1027328540).

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

634863460 is a wasteful number, since it uses less digits than its factorization.

634863460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412276 (or 412274 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 40.

The square root of 634863460 is about 25196.4969787469. The cubic root of 634863460 is about 859.4621930439.

The spelling of 634863460 in words is "six hundred thirty-four million, eight hundred sixty-three thousand, four hundred sixty".