64138703 has 2 divisors, whose sum is σ = 64138704. Its totient is φ = 64138702.

The previous prime is 64138681. The next prime is 64138727. The reversal of 64138703 is 30783146.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64138703 - 2⁸ = 64138447 is a prime.

It is a super-2 number, since 2×64138703² = 8227546445044418, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64138703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64138733) 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, 32069351 + 32069352.

It is an arithmetic number, because the mean of its divisors is an integer number (32069352).

Almost surely, 2^64138703 is an apocalyptic number.

64138703 is a deficient number, since it is larger than the sum of its proper divisors (1).

64138703 is an equidigital number, since it uses as much as digits as its factorization.

64138703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 64138703 is about 8008.6642456779. The cubic root of 64138703 is about 400.2887560830.

The spelling of 64138703 in words is "sixty-four million, one hundred thirty-eight thousand, seven hundred three".