673446864 has 80 divisors (see below), whose sum is σ = 1761851520. Its totient is φ = 221652480.

The previous prime is 673446859. The next prime is 673446869. The reversal of 673446864 is 468644376.

673446864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (673446859) and next prime (673446869).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673446869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2165269 + ... + 2165579.

It is an arithmetic number, because the mean of its divisors is an integer number (22023144).

Almost surely, 2^673446864 is an apocalyptic number.

It is an amenable number.

673446864 is an abundant number, since it is smaller than the sum of its proper divisors (1088404656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

673446864 is a wasteful number, since it uses less digits than its factorization.

673446864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748 (or 742 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 48.

The square root of 673446864 is about 25950.8547836097. The cubic root of 673446864 is about 876.5320051916.

The spelling of 673446864 in words is "six hundred seventy-three million, four hundred forty-six thousand, eight hundred sixty-four".