687054634 has 16 divisors (see below), whose sum is σ = 1179013248. Its totient is φ = 294150672.

The previous prime is 687054629. The next prime is 687054679. The reversal of 687054634 is 436450786.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10654 + ... + 38569.

It is an arithmetic number, because the mean of its divisors is an integer number (73688328).

Almost surely, 2^687054634 is an apocalyptic number.

687054634 is a deficient number, since it is larger than the sum of its proper divisors (491958614).

687054634 is a wasteful number, since it uses less digits than its factorization.

687054634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50229.

The product of its (nonzero) digits is 483840, while the sum is 43.

The square root of 687054634 is about 26211.7270319985. The cubic root of 687054634 is about 882.3964611948.

It can be divided in two parts, 6870 and 54634, that added together give a square (61504 = 248²).

The spelling of 687054634 in words is "six hundred eighty-seven million, fifty-four thousand, six hundred thirty-four".