672320863834685 has 64 divisors (see below), whose sum is σ = 908802476628480. Its totient is φ = 474042811468800.

The previous prime is 672320863834559. The next prime is 672320863834693. The reversal of 672320863834685 is 586438368023276.

672320863834685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 672320863834685 - 2¹⁸ = 672320863572541 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 155313344 + ... + 159583446.

It is an arithmetic number, because the mean of its divisors is an integer number (14200038697320).

Almost surely, 2^{672320863834685} is an apocalyptic number.

672320863834685 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

672320863834685 is a deficient number, since it is larger than the sum of its proper divisors (236481612793795).

672320863834685 is a wasteful number, since it uses less digits than its factorization.

672320863834685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4271078.

The product of its (nonzero) digits is 1672151040, while the sum is 71.

The spelling of 672320863834685 in words is "six hundred seventy-two trillion, three hundred twenty billion, eight hundred sixty-three million, eight hundred thirty-four thousand, six hundred eighty-five".