670405911867 has 12 divisors (see below), whose sum is σ = 999601646784. Its totient is φ = 432519942960.

The previous prime is 670405911859. The next prime is 670405911881. The reversal of 670405911867 is 768119504076.

670405911867 is a `hidden beast` number, since 6 + 7 + 0 + 40 + 591 + 1 + 8 + 6 + 7 = 666.

It is not a de Polignac number, because 670405911867 - 2³ = 670405911859 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (670405911827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1201444008 + ... + 1201444565.

It is an arithmetic number, because the mean of its divisors is an integer number (83300137232).

Almost surely, 2^670405911867 is an apocalyptic number.

670405911867 is a deficient number, since it is larger than the sum of its proper divisors (329195734917).

670405911867 is a wasteful number, since it uses less digits than its factorization.

670405911867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2402888610 (or 2402888607 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 670405911867 in words is "six hundred seventy billion, four hundred five million, nine hundred eleven thousand, eight hundred sixty-seven".