64424207 has 2 divisors, whose sum is σ = 64424208. Its totient is φ = 64424206.

The previous prime is 64424201. The next prime is 64424209. The reversal of 64424207 is 70242446.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64424207 is a prime.

Together with 64424209, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64424207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64424201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32212103 + 32212104.

It is an arithmetic number, because the mean of its divisors is an integer number (32212104).

Almost surely, 2^64424207 is an apocalyptic number.

64424207 is a deficient number, since it is larger than the sum of its proper divisors (1).

64424207 is an equidigital number, since it uses as much as digits as its factorization.

64424207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 29.

The square root of 64424207 is about 8026.4691490094. The cubic root of 64424207 is about 400.8818191423.

The spelling of 64424207 in words is "sixty-four million, four hundred twenty-four thousand, two hundred seven".