672185380 has 24 divisors (see below), whose sum is σ = 1413228600. Its totient is φ = 268561920.

The previous prime is 672185347. The next prime is 672185441. The reversal of 672185380 is 83581276.

It can be written as a sum of positive squares in 4 ways, for example, as 94167616 + 578017764 = 9704^2 + 24042^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1455 + ... + 36694.

It is an arithmetic number, because the mean of its divisors is an integer number (58884525).

Almost surely, 2^672185380 is an apocalyptic number.

It is an amenable number.

672185380 is an abundant number, since it is smaller than the sum of its proper divisors (741043220).

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

672185380 is a wasteful number, since it uses less digits than its factorization.

672185380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39039 (or 39037 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 672185380 is about 25926.5381414488. The cubic root of 672185380 is about 875.9843637528.

The spelling of 672185380 in words is "six hundred seventy-two million, one hundred eighty-five thousand, three hundred eighty".