712491644 has 12 divisors (see below), whose sum is σ = 1251363624. Its totient is φ = 354959184.

The previous prime is 712491643. The next prime is 712491649. The reversal of 712491644 is 446194217.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 712491598 and 712491607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (712491643) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 320414 + ... + 322629.

It is an arithmetic number, because the mean of its divisors is an integer number (104280302).

Almost surely, 2^712491644 is an apocalyptic number.

It is an amenable number.

712491644 is a deficient number, since it is larger than the sum of its proper divisors (538871980).

712491644 is a wasteful number, since it uses less digits than its factorization.

712491644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643324 (or 643322 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 712491644 is about 26692.5391073985. The cubic root of 712491644 is about 893.1545022716.

The spelling of 712491644 in words is "seven hundred twelve million, four hundred ninety-one thousand, six hundred forty-four".