688762134 has 24 divisors (see below), whose sum is σ = 1497097992. Its totient is φ = 228852000.

The previous prime is 688762091. The next prime is 688762153. The reversal of 688762134 is 431267886.

It is a self number, because there is not a number n which added to its sum of digits gives 688762134.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55492 + ... + 66759.

It is an arithmetic number, because the mean of its divisors is an integer number (62379083).

Almost surely, 2^688762134 is an apocalyptic number.

688762134 is an abundant number, since it is smaller than the sum of its proper divisors (808335858).

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

688762134 is a wasteful number, since it uses less digits than its factorization.

688762134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122572 (or 122569 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 688762134 is about 26244.2781192396. The cubic root of 688762134 is about 883.1268473177.

The spelling of 688762134 in words is "six hundred eighty-eight million, seven hundred sixty-two thousand, one hundred thirty-four".