673856460 has 36 divisors (see below), whose sum is σ = 2044031808. Its totient is φ = 179695008.

The previous prime is 673856459. The next prime is 673856467. The reversal of 673856460 is 64658376.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (673856467) 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, 1871644 + ... + 1872003.

Almost surely, 2^673856460 is an apocalyptic number.

673856460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

673856460 is an abundant number, since it is smaller than the sum of its proper divisors (1370175348).

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

673856460 is a wasteful number, since it uses less digits than its factorization.

673856460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3743662 (or 3743657 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The square root of 673856460 is about 25958.7453471850. The cubic root of 673856460 is about 876.7096738689.

The spelling of 673856460 in words is "six hundred seventy-three million, eight hundred fifty-six thousand, four hundred sixty".