687275358 has 64 divisors (see below), whose sum is σ = 1734469632. Its totient is φ = 176352480.

The previous prime is 687275339. The next prime is 687275383. The reversal of 687275358 is 853572786.

It is a self number, because there is not a number n which added to its sum of digits gives 687275358.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29385 + ... + 47307.

It is an arithmetic number, because the mean of its divisors is an integer number (27101088).

Almost surely, 2^687275358 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 687275358, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (867234816).

687275358 is an abundant number, since it is smaller than the sum of its proper divisors (1047194274).

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

687275358 is a wasteful number, since it uses less digits than its factorization.

687275358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18029.

The product of its digits is 2822400, while the sum is 51.

The square root of 687275358 is about 26215.9370994058. The cubic root of 687275358 is about 882.4909443279.

The spelling of 687275358 in words is "six hundred eighty-seven million, two hundred seventy-five thousand, three hundred fifty-eight".