634432512 has 176 divisors, whose sum is σ = 1955163392. Its totient is φ = 179159040.

The previous prime is 634432459. The next prime is 634432523. The reversal of 634432512 is 215234436.

It is a super-2 number, since 2×634432512² = 805009224565260288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 634432512.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3505062 + ... + 3505242.

Almost surely, 2^634432512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 634432512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (977581696).

634432512 is an abundant number, since it is smaller than the sum of its proper divisors (1320730880).

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

634432512 is a wasteful number, since it uses less digits than its factorization.

634432512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 356 counting only the distinct ones).

The product of its digits is 17280, while the sum is 30.

The square root of 634432512 is about 25187.9437826910. The cubic root of 634432512 is about 859.2676801688.

Adding to 634432512 its reverse (215234436), we get a palindrome (849666948).

The spelling of 634432512 in words is "six hundred thirty-four million, four hundred thirty-two thousand, five hundred twelve".