673488720 has 120 divisors (see below), whose sum is σ = 2267774496. Its totient is φ = 179122944.

The previous prime is 673488653. The next prime is 673488727. The reversal of 673488720 is 27884376.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673488727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 335239 + ... + 337241.

Almost surely, 2^673488720 is an apocalyptic number.

673488720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673488720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1133887248).

673488720 is an abundant number, since it is smaller than the sum of its proper divisors (1594285776).

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

673488720 is a wasteful number, since it uses less digits than its factorization.

673488720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2489 (or 2480 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 673488720 is about 25951.6612185039. The cubic root of 673488720 is about 876.5501641910.

The spelling of 673488720 in words is "six hundred seventy-three million, four hundred eighty-eight thousand, seven hundred twenty".