64366331 has 2 divisors, whose sum is σ = 64366332. Its totient is φ = 64366330.

The previous prime is 64366321. The next prime is 64366343. The reversal of 64366331 is 13366346.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64366331 is a prime.

It is a super-2 number, since 2×64366331² = 8286049132803122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64366321) 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 as a sum of consecutive naturals, namely, 32183165 + 32183166.

It is an arithmetic number, because the mean of its divisors is an integer number (32183166).

Almost surely, 2^64366331 is an apocalyptic number.

64366331 is a deficient number, since it is larger than the sum of its proper divisors (1).

64366331 is an equidigital number, since it uses as much as digits as its factorization.

64366331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 32.

The square root of 64366331 is about 8022.8630176515. The cubic root of 64366331 is about 400.7617380504.

The spelling of 64366331 in words is "sixty-four million, three hundred sixty-six thousand, three hundred thirty-one".