672758784 has 110 divisors (see below), whose sum is σ = 2009236944. Its totient is φ = 224225280.

The previous prime is 672758777. The next prime is 672758851. The reversal of 672758784 is 487857276.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 672758784.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 78889 + ... + 86999.

Almost surely, 2^672758784 is an apocalyptic number.

672758784 is a gapful number since it is divisible by the number (64) 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 672758784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1004618472).

672758784 is an abundant number, since it is smaller than the sum of its proper divisors (1336478160).

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

672758784 is an equidigital number, since it uses as much as digits as its factorization.

672758784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8143 (or 8116 counting only the distinct ones).

The product of its digits is 5268480, while the sum is 54.

The square root of 672758784 is about 25937.5940287452. The cubic root of 672758784 is about 876.2333774895.

The spelling of 672758784 in words is "six hundred seventy-two million, seven hundred fifty-eight thousand, seven hundred eighty-four".