634860317492 has 24 divisors (see below), whose sum is σ = 1119433145544. Its totient is φ = 315023593472.

The previous prime is 634860317479. The next prime is 634860317501. The reversal of 634860317492 is 294713068436.

It can be written as a sum of positive squares in 4 ways, for example, as 166834670116 + 468025647376 = 408454^2 + 684124^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1786388 + ... + 2112084.

It is an arithmetic number, because the mean of its divisors is an integer number (46643047731).

Almost surely, 2^634860317492 is an apocalyptic number.

It is an amenable number.

634860317492 is a deficient number, since it is larger than the sum of its proper divisors (484572828052).

634860317492 is a wasteful number, since it uses less digits than its factorization.

634860317492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329395 (or 329393 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 53.

The spelling of 634860317492 in words is "six hundred thirty-four billion, eight hundred sixty million, three hundred seventeen thousand, four hundred ninety-two".