634705340 has 24 divisors (see below), whose sum is σ = 1333955952. Its totient is φ = 253677440.

The previous prime is 634705321. The next prime is 634705367. The reversal of 634705340 is 43507436.

It is a junction number, because it is equal to n+sod(n) for n = 634705297 and 634705306.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14000 + ... + 38280.

It is an arithmetic number, because the mean of its divisors is an integer number (55581498).

Almost surely, 2^634705340 is an apocalyptic number.

It is an amenable number.

634705340 is an abundant number, since it is smaller than the sum of its proper divisors (699250612).

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

634705340 is a wasteful number, since it uses less digits than its factorization.

634705340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25597 (or 25595 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 32.

The square root of 634705340 is about 25193.3590455898. The cubic root of 634705340 is about 859.3908341589.

The spelling of 634705340 in words is "six hundred thirty-four million, seven hundred five thousand, three hundred forty".