687072854 has 16 divisors (see below), whose sum is σ = 1110684960. Its totient is φ = 316882560.

The previous prime is 687072847. The next prime is 687072857. The reversal of 687072854 is 458270786.

It is a junction number, because it is equal to n+sod(n) for n = 687072799 and 687072808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (687072857) by changing a digit.

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, 30542 + ... + 48030.

It is an arithmetic number, because the mean of its divisors is an integer number (69417810).

Almost surely, 2^687072854 is an apocalyptic number.

687072854 is a deficient number, since it is larger than the sum of its proper divisors (423612106).

687072854 is a wasteful number, since it uses less digits than its factorization.

687072854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19015.

The product of its (nonzero) digits is 752640, while the sum is 47.

The square root of 687072854 is about 26212.0745840538. The cubic root of 687072854 is about 882.4042612156.

The spelling of 687072854 in words is "six hundred eighty-seven million, seventy-two thousand, eight hundred fifty-four".