687454974 has 24 divisors (see below), whose sum is σ = 1511719560. Its totient is φ = 225731088.

The previous prime is 687454973. The next prime is 687455003. The reversal of 687454974 is 479454786.

It is a self number, because there is not a number n which added to its sum of digits gives 687454974.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687454973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 283809 + ... + 286220.

It is an arithmetic number, because the mean of its divisors is an integer number (62988315).

Almost surely, 2^687454974 is an apocalyptic number.

687454974 is an abundant number, since it is smaller than the sum of its proper divisors (824264586).

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

687454974 is a wasteful number, since it uses less digits than its factorization.

687454974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570104 (or 570101 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 54.

The square root of 687454974 is about 26219.3625780643. The cubic root of 687454974 is about 882.5678158395.

The spelling of 687454974 in words is "six hundred eighty-seven million, four hundred fifty-four thousand, nine hundred seventy-four".