687634014 has 16 divisors (see below), whose sum is σ = 1380500352. Its totient is φ = 228339288.

The previous prime is 687633983. The next prime is 687634039. The reversal of 687634014 is 410436786.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216304 + ... + 219459.

It is an arithmetic number, because the mean of its divisors is an integer number (86281272).

Almost surely, 2^687634014 is an apocalyptic number.

687634014 is an abundant number, since it is smaller than the sum of its proper divisors (692866338).

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

687634014 is a wasteful number, since it uses less digits than its factorization.

687634014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436031.

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 687634014 is about 26222.7766264368. The cubic root of 687634014 is about 882.6444275120.

The spelling of 687634014 in words is "six hundred eighty-seven million, six hundred thirty-four thousand, fourteen".