670865854 has 16 divisors (see below), whose sum is σ = 1039683456. Its totient is φ = 324324000.

The previous prime is 670865837. The next prime is 670865873. The reversal of 670865854 is 458568076.

It is a junction number, because it is equal to n+sod(n) for n = 670865798 and 670865807.

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, 76504 + ... + 84820.

It is an arithmetic number, because the mean of its divisors is an integer number (64980216).

Almost surely, 2^670865854 is an apocalyptic number.

670865854 is a deficient number, since it is larger than the sum of its proper divisors (368817602).

670865854 is a wasteful number, since it uses less digits than its factorization.

670865854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9651.

The product of its (nonzero) digits is 1612800, while the sum is 49.

The square root of 670865854 is about 25901.0782401042. The cubic root of 670865854 is about 875.4107911678.

The spelling of 670865854 in words is "six hundred seventy million, eight hundred sixty-five thousand, eight hundred fifty-four".