964653921 has 64 divisors (see below), whose sum is σ = 1875609600. Its totient is φ = 474724800.

The previous prime is 964653913. The next prime is 964653947. The reversal of 964653921 is 129356469.

964653921 is a `hidden beast` number, since 96 + 4 + 6 + 539 + 21 = 666.

It is not a de Polignac number, because 964653921 - 2³ = 964653913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (964653961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 27291 + ... + 51711.

It is an arithmetic number, because the mean of its divisors is an integer number (29306400).

Almost surely, 2^964653921 is an apocalyptic number.

It is an amenable number.

964653921 is a deficient number, since it is larger than the sum of its proper divisors (910955679).

964653921 is a wasteful number, since it uses less digits than its factorization.

964653921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24467 (or 24461 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 964653921 is about 31058.8782959076. The cubic root of 964653921 is about 988.0763656846.

The spelling of 964653921 in words is "nine hundred sixty-four million, six hundred fifty-three thousand, nine hundred twenty-one".