672067820 has 48 divisors (see below), whose sum is σ = 1497726720. Its totient is φ = 252770496.

The previous prime is 672067807. The next prime is 672067831. The reversal of 672067820 is 28760276.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14759 + ... + 39521.

It is an arithmetic number, because the mean of its divisors is an integer number (31202640).

Almost surely, 2^672067820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 672067820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (748863360).

672067820 is an abundant number, since it is smaller than the sum of its proper divisors (825658900).

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

672067820 is a wasteful number, since it uses less digits than its factorization.

672067820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24854 (or 24852 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 672067820 is about 25924.2708672780. The cubic root of 672067820 is about 875.9332931558.

The spelling of 672067820 in words is "six hundred seventy-two million, sixty-seven thousand, eight hundred twenty".