964580643 has 20 divisors (see below), whose sum is σ = 1551758208. Its totient is φ = 593587440.

The previous prime is 964580627. The next prime is 964580689. The reversal of 964580643 is 346085469.

964580643 is a `hidden beast` number, since 9 + 6 + 4 + 580 + 64 + 3 = 666.

It is not a de Polignac number, because 964580643 - 2⁴ = 964580627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (964581643) 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 19 ways as a sum of consecutive naturals, for example, 456963 + ... + 459068.

Almost surely, 2^964580643 is an apocalyptic number.

964580643 is a deficient number, since it is larger than the sum of its proper divisors (587177565).

964580643 is a wasteful number, since it uses less digits than its factorization.

964580643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916056 (or 916047 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 964580643 is about 31057.6986108115. The cubic root of 964580643 is about 988.0513459713.

The spelling of 964580643 in words is "nine hundred sixty-four million, five hundred eighty thousand, six hundred forty-three".