64912433 has 2 divisors, whose sum is σ = 64912434. Its totient is φ = 64912432.

The previous prime is 64912429. The next prime is 64912451. The reversal of 64912433 is 33421946.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64770304 + 142129 = 8048^2 + 377^2 .

It is a cyclic number.

It is not a de Polignac number, because 64912433 - 2² = 64912429 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 64912433.

It is not a weakly prime, because it can be changed into another prime (64912423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32456216 + 32456217.

It is an arithmetic number, because the mean of its divisors is an integer number (32456217).

Almost surely, 2^64912433 is an apocalyptic number.

It is an amenable number.

64912433 is a deficient number, since it is larger than the sum of its proper divisors (1).

64912433 is an equidigital number, since it uses as much as digits as its factorization.

64912433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 32.

The square root of 64912433 is about 8056.8252432332. The cubic root of 64912433 is about 401.8919393882.

The spelling of 64912433 in words is "sixty-four million, nine hundred twelve thousand, four hundred thirty-three".