64880433 has 10 divisors (see below), whose sum is σ = 96920274. Its totient is φ = 43253568.

The previous prime is 64880423. The next prime is 64880437. The reversal of 64880433 is 33408846.

64880433 is a `hidden beast` number, since 648 + 8 + 0 + 4 + 3 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 64448784 + 431649 = 8028^2 + 657^2 .

It is not a de Polignac number, because 64880433 - 2⁶ = 64880369 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64880437) 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 9 ways as a sum of consecutive naturals, for example, 400416 + ... + 400577.

Almost surely, 2^64880433 is an apocalyptic number.

It is an amenable number.

64880433 is a deficient number, since it is larger than the sum of its proper divisors (32039841).

64880433 is an equidigital number, since it uses as much as digits as its factorization.

64880433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801005 (or 800996 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 64880433 is about 8054.8391045383. The cubic root of 64880433 is about 401.8258880668.

The spelling of 64880433 in words is "sixty-four million, eight hundred eighty thousand, four hundred thirty-three".