687000474 has 32 divisors (see below), whose sum is σ = 1537827840. Its totient is φ = 227326176.

The previous prime is 687000407. The next prime is 687000487. The reversal of 687000474 is 474000786.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39034 + ... + 53829.

It is an arithmetic number, because the mean of its divisors is an integer number (48057120).

Almost surely, 2^687000474 is an apocalyptic number.

687000474 is an abundant number, since it is smaller than the sum of its proper divisors (850827366).

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

687000474 is a wasteful number, since it uses less digits than its factorization.

687000474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93011 (or 93005 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 687000474 is about 26210.6938862747. The cubic root of 687000474 is about 882.3732743691.

The spelling of 687000474 in words is "six hundred eighty-seven million, four hundred seventy-four", and thus it is an aban number.