64238507 has 2 divisors, whose sum is σ = 64238508. Its totient is φ = 64238506.

The previous prime is 64238501. The next prime is 64238543. The reversal of 64238507 is 70583246.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64238507 - 2¹⁰ = 64237483 is a prime.

It is not a weakly prime, because it can be changed into another prime (64238501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32119253 + 32119254.

It is an arithmetic number, because the mean of its divisors is an integer number (32119254).

Almost surely, 2^64238507 is an apocalyptic number.

64238507 is a deficient number, since it is larger than the sum of its proper divisors (1).

64238507 is an equidigital number, since it uses as much as digits as its factorization.

64238507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 64238507 is about 8014.8928252348. The cubic root of 64238507 is about 400.4962736100.

The spelling of 64238507 in words is "sixty-four million, two hundred thirty-eight thousand, five hundred seven".