672180736 has 20 divisors (see below), whose sum is σ = 1343049642. Its totient is φ = 336090112.

The previous prime is 672180683. The next prime is 672180749. The reversal of 672180736 is 637081276.

It can be written as a sum of positive squares in only one way, i.e., 544942336 + 127238400 = 23344^2 + 11280^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655915 + ... + 656938.

Almost surely, 2^672180736 is an apocalyptic number.

It is an amenable number.

672180736 is a deficient number, since it is larger than the sum of its proper divisors (670868906).

672180736 is an equidigital number, since it uses as much as digits as its factorization.

672180736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312871 (or 1312855 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 672180736 is about 25926.4485805519. The cubic root of 672180736 is about 875.9823464121.

The spelling of 672180736 in words is "six hundred seventy-two million, one hundred eighty thousand, seven hundred thirty-six".