731671664 has 10 divisors (see below), whose sum is σ = 1417613880. Its totient is φ = 365835824.

The previous prime is 731671651. The next prime is 731671667. The reversal of 731671664 is 466176137.

731671664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731671667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22864724 + ... + 22864755.

It is an arithmetic number, because the mean of its divisors is an integer number (141761388).

Almost surely, 2^731671664 is an apocalyptic number.

It is an amenable number.

731671664 is a deficient number, since it is larger than the sum of its proper divisors (685942216).

731671664 is a wasteful number, since it uses less digits than its factorization.

731671664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45729487 (or 45729481 counting only the distinct ones).

The product of its digits is 127008, while the sum is 41.

The square root of 731671664 is about 27049.4300124790. The cubic root of 731671664 is about 901.0981098328.

The spelling of 731671664 in words is "seven hundred thirty-one million, six hundred seventy-one thousand, six hundred sixty-four".