672461668 has 12 divisors (see below), whose sum is σ = 1199012220. Its totient is φ = 329886752.

The previous prime is 672461659. The next prime is 672461681. The reversal of 672461668 is 866164276.

It can be written as a sum of positive squares in 2 ways, for example, as 421809444 + 250652224 = 20538^2 + 15832^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1585783 + ... + 1586206.

It is an arithmetic number, because the mean of its divisors is an integer number (99917685).

Almost surely, 2^672461668 is an apocalyptic number.

It is an amenable number.

672461668 is a deficient number, since it is larger than the sum of its proper divisors (526550552).

672461668 is a wasteful number, since it uses less digits than its factorization.

672461668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3172046 (or 3172044 counting only the distinct ones).

The product of its digits is 580608, while the sum is 46.

The square root of 672461668 is about 25931.8658796470. The cubic root of 672461668 is about 876.1043657755.

The spelling of 672461668 in words is "six hundred seventy-two million, four hundred sixty-one thousand, six hundred sixty-eight".