634897432 has 64 divisors (see below), whose sum is σ = 1318020480. Its totient is φ = 284884992.

The previous prime is 634897429. The next prime is 634897489. The reversal of 634897432 is 234798436.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 943048 + ... + 943720.

It is an arithmetic number, because the mean of its divisors is an integer number (20594070).

Almost surely, 2^634897432 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 634897432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (659010240).

634897432 is an abundant number, since it is smaller than the sum of its proper divisors (683123048).

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

634897432 is a wasteful number, since it uses less digits than its factorization.

634897432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932 (or 928 counting only the distinct ones).

The product of its digits is 870912, while the sum is 46.

The square root of 634897432 is about 25197.1711110593. The cubic root of 634897432 is about 859.4775229170.

The spelling of 634897432 in words is "six hundred thirty-four million, eight hundred ninety-seven thousand, four hundred thirty-two".