634392534 has 16 divisors (see below), whose sum is σ = 1283042160. Its totient is φ = 209088000.

The previous prime is 634392533. The next prime is 634392541. The reversal of 634392534 is 435293436.

634392534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 634392492 and 634392501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634392533) 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, 593467 + ... + 594534.

It is an arithmetic number, because the mean of its divisors is an integer number (80190135).

Almost surely, 2^634392534 is an apocalyptic number.

634392534 is an abundant number, since it is smaller than the sum of its proper divisors (648649626).

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

634392534 is a wasteful number, since it uses less digits than its factorization.

634392534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188095.

The product of its digits is 233280, while the sum is 39.

The square root of 634392534 is about 25187.1501762307. The cubic root of 634392534 is about 859.2496312173.

The spelling of 634392534 in words is "six hundred thirty-four million, three hundred ninety-two thousand, five hundred thirty-four".