64772433 has 24 divisors (see below), whose sum is σ = 104907360. Its totient is φ = 39171960.

The previous prime is 64772419. The next prime is 64772437. The reversal of 64772433 is 33427746.

It is a happy number.

64772433 is a `hidden beast` number, since 647 + 7 + 2 + 4 + 3 + 3 = 666.

It is not a de Polignac number, because 64772433 - 2⁴ = 64772417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64772437) 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, 138466 + ... + 138932.

It is an arithmetic number, because the mean of its divisors is an integer number (4371140).

Almost surely, 2^64772433 is an apocalyptic number.

It is an amenable number.

64772433 is a deficient number, since it is larger than the sum of its proper divisors (40134927).

64772433 is an equidigital number, since it uses as much as digits as its factorization.

64772433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954 (or 481 counting only the distinct ones).

The product of its digits is 84672, while the sum is 36.

The square root of 64772433 is about 8048.1322677998. The cubic root of 64772433 is about 401.6028043837.

The spelling of 64772433 in words is "sixty-four million, seven hundred seventy-two thousand, four hundred thirty-three".