687974070 has 32 divisors (see below), whose sum is σ = 1887015168. Its totient is φ = 157251168.

The previous prime is 687974069. The next prime is 687974083. The reversal of 687974070 is 70479786.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1637824 + ... + 1638243.

It is an arithmetic number, because the mean of its divisors is an integer number (58969224).

Almost surely, 2^687974070 is an apocalyptic number.

687974070 is an abundant number, since it is smaller than the sum of its proper divisors (1199041098).

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

687974070 is a wasteful number, since it uses less digits than its factorization.

687974070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3276084.

The product of its (nonzero) digits is 592704, while the sum is 48.

The square root of 687974070 is about 26229.2598065595. The cubic root of 687974070 is about 882.7899017339.

The spelling of 687974070 in words is "six hundred eighty-seven million, nine hundred seventy-four thousand, seventy".