647964033 has 16 divisors (see below), whose sum is σ = 891027456. Its totient is φ = 418597200.

The previous prime is 647964013. The next prime is 647964067. The reversal of 647964033 is 330469746.

It is not a de Polignac number, because 647964033 - 2⁶ = 647963969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (647964013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3393 + ... + 36158.

It is an arithmetic number, because the mean of its divisors is an integer number (55689216).

Almost surely, 2^647964033 is an apocalyptic number.

It is an amenable number.

647964033 is a deficient number, since it is larger than the sum of its proper divisors (243063423).

647964033 is a wasteful number, since it uses less digits than its factorization.

647964033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39724.

The product of its (nonzero) digits is 326592, while the sum is 42.

The square root of 647964033 is about 25455.1376543125. The cubic root of 647964033 is about 865.3337315826. Note that the first 3 decimals are identical.

The spelling of 647964033 in words is "six hundred forty-seven million, nine hundred sixty-four thousand, thirty-three".