687937214 has 16 divisors (see below), whose sum is σ = 1067212800. Its totient is φ = 332385144.

The previous prime is 687937207. The next prime is 687937231. The reversal of 687937214 is 412739786.

It is a super-2 number, since 2×687937214² = 946515220812163592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

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 7 ways as a sum of consecutive naturals, for example, 38894 + ... + 53745.

It is an arithmetic number, because the mean of its divisors is an integer number (66700800).

Almost surely, 2^687937214 is an apocalyptic number.

687937214 is a deficient number, since it is larger than the sum of its proper divisors (379275586).

687937214 is a wasteful number, since it uses less digits than its factorization.

687937214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92767.

The product of its digits is 508032, while the sum is 47.

The square root of 687937214 is about 26228.5572229965. The cubic root of 687937214 is about 882.7741372417.

The spelling of 687937214 in words is "six hundred eighty-seven million, nine hundred thirty-seven thousand, two hundred fourteen".