634456992 has 96 divisors (see below), whose sum is σ = 1801312128. Its totient is φ = 194374656.

The previous prime is 634456981. The next prime is 634456997. The reversal of 634456992 is 299654436.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (634456997) 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, 327258 + ... + 329190.

It is an arithmetic number, because the mean of its divisors is an integer number (18763668).

Almost surely, 2^634456992 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 634456992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (900656064).

634456992 is an abundant number, since it is smaller than the sum of its proper divisors (1166855136).

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

634456992 is a wasteful number, since it uses less digits than its factorization.

634456992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222 (or 2214 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 48.

The square root of 634456992 is about 25188.4297247764. The cubic root of 634456992 is about 859.2787318314.

It can be divided in two parts, 6344 and 56992, that added together give a palindrome (63336).

The spelling of 634456992 in words is "six hundred thirty-four million, four hundred fifty-six thousand, nine hundred ninety-two".