64229933 has 2 divisors, whose sum is σ = 64229934. Its totient is φ = 64229932.

The previous prime is 64229911. The next prime is 64229947. The reversal of 64229933 is 33992246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53027524 + 11202409 = 7282^2 + 3347^2 .

It is a cyclic number.

It is not a de Polignac number, because 64229933 - 2⁸ = 64229677 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64229993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32114966 + 32114967.

It is an arithmetic number, because the mean of its divisors is an integer number (32114967).

Almost surely, 2^64229933 is an apocalyptic number.

It is an amenable number.

64229933 is a deficient number, since it is larger than the sum of its proper divisors (1).

64229933 is an equidigital number, since it uses as much as digits as its factorization.

64229933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 38.

The square root of 64229933 is about 8014.3579281188. The cubic root of 64229933 is about 400.4784545582.

The spelling of 64229933 in words is "sixty-four million, two hundred twenty-nine thousand, nine hundred thirty-three".