64336669 has 2 divisors, whose sum is σ = 64336670. Its totient is φ = 64336668.

The previous prime is 64336633. The next prime is 64336693. The reversal of 64336669 is 96663346.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46172025 + 18164644 = 6795^2 + 4262^2 .

It is a cyclic number.

It is not a de Polignac number, because 64336669 - 2⁹ = 64336157 is a prime.

It is a super-2 number, since 2×64336669² = 8278413956031122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64339669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32168334 + 32168335.

It is an arithmetic number, because the mean of its divisors is an integer number (32168335).

Almost surely, 2^64336669 is an apocalyptic number.

It is an amenable number.

64336669 is a deficient number, since it is larger than the sum of its proper divisors (1).

64336669 is an equidigital number, since it uses as much as digits as its factorization.

64336669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 419904, while the sum is 43.

The square root of 64336669 is about 8021.0142126791. The cubic root of 64336669 is about 400.7001674488.

The spelling of 64336669 in words is "sixty-four million, three hundred thirty-six thousand, six hundred sixty-nine".