647064032 has 12 divisors (see below), whose sum is σ = 1273907376. Its totient is φ = 323532000.

The previous prime is 647064031. The next prime is 647064049. The reversal of 647064032 is 230460746.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 20220751 = 647064032 / (6 + 4 + 7 + 0 + 6 + 4 + 0 + 3 + 2).

It is a self number, because there is not a number n which added to its sum of digits gives 647064032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647064031) by changing a digit.

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 as a sum of consecutive naturals, namely, 10110344 + ... + 10110407.

It is an arithmetic number, because the mean of its divisors is an integer number (106158948).

Almost surely, 2^647064032 is an apocalyptic number.

It is an amenable number.

647064032 is a deficient number, since it is larger than the sum of its proper divisors (626843344).

647064032 is a wasteful number, since it uses less digits than its factorization.

647064032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20220761 (or 20220753 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 647064032 is about 25437.4533316525. The cubic root of 647064032 is about 864.9329057964.

The spelling of 647064032 in words is "six hundred forty-seven million, sixty-four thousand, thirty-two".