672661412 has 6 divisors (see below), whose sum is σ = 1177157478. Its totient is φ = 336330704.

The previous prime is 672661403. The next prime is 672661477. The reversal of 672661412 is 214166276.

It can be written as a sum of positive squares in only one way, i.e., 619312996 + 53348416 = 24886^2 + 7304^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84082673 + ... + 84082680.

It is an arithmetic number, because the mean of its divisors is an integer number (196192913).

Almost surely, 2^672661412 is an apocalyptic number.

It is an amenable number.

672661412 is a deficient number, since it is larger than the sum of its proper divisors (504496066).

672661412 is a wasteful number, since it uses less digits than its factorization.

672661412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168165357 (or 168165355 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The square root of 672661412 is about 25935.7169170239. The cubic root of 672661412 is about 876.1911014588.

The spelling of 672661412 in words is "six hundred seventy-two million, six hundred sixty-one thousand, four hundred twelve".