664464941 has 24 divisors (see below), whose sum is σ = 861511680. Its totient is φ = 507814272.

The previous prime is 664464919. The next prime is 664464947. The reversal of 664464941 is 149464466.

It is not a de Polignac number, because 664464941 - 2¹⁴ = 664448557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 664464892 and 664464901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664464947) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5165 + ... + 36818.

It is an arithmetic number, because the mean of its divisors is an integer number (35896320).

Almost surely, 2^664464941 is an apocalyptic number.

It is an amenable number.

664464941 is a deficient number, since it is larger than the sum of its proper divisors (197046739).

664464941 is a wasteful number, since it uses less digits than its factorization.

664464941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42033 (or 42026 counting only the distinct ones).

The product of its digits is 497664, while the sum is 44.

The square root of 664464941 is about 25777.2174797824. The cubic root of 664464941 is about 872.6177118327.

The spelling of 664464941 in words is "six hundred sixty-four million, four hundred sixty-four thousand, nine hundred forty-one".