672746823 has 32 divisors (see below), whose sum is σ = 1162304000. Its totient is φ = 384421464.

The previous prime is 672746821. The next prime is 672746881. The reversal of 672746823 is 328647276.

It is not a de Polignac number, because 672746823 - 2¹ = 672746821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672746821) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 27061 + ... + 45582.

It is an arithmetic number, because the mean of its divisors is an integer number (36322000).

Almost surely, 2^672746823 is an apocalyptic number.

672746823 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

672746823 is a deficient number, since it is larger than the sum of its proper divisors (489557177).

672746823 is an equidigital number, since it uses as much as digits as its factorization.

672746823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72673 (or 72653 counting only the distinct ones).

The product of its digits is 677376, while the sum is 45.

The square root of 672746823 is about 25937.3634550623. The cubic root of 672746823 is about 876.2281845983.

The spelling of 672746823 in words is "six hundred seventy-two million, seven hundred forty-six thousand, eight hundred twenty-three".