634537992 has 32 divisors (see below), whose sum is σ = 1730558880. Its totient is φ = 192284160.

The previous prime is 634537991. The next prime is 634537999. The reversal of 634537992 is 299735436.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (634537991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1201513 + ... + 1202040.

It is an arithmetic number, because the mean of its divisors is an integer number (54079965).

Almost surely, 2^634537992 is an apocalyptic number.

It is an amenable number.

634537992 is an abundant number, since it is smaller than the sum of its proper divisors (1096020888).

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

634537992 is a wasteful number, since it uses less digits than its factorization.

634537992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2403573 (or 2403569 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 48.

The square root of 634537992 is about 25190.0375545572. The cubic root of 634537992 is about 859.3152978064.

The spelling of 634537992 in words is "six hundred thirty-four million, five hundred thirty-seven thousand, nine hundred ninety-two".