64764593 has 2 divisors, whose sum is σ = 64764594. Its totient is φ = 64764592.

The previous prime is 64764587. The next prime is 64764607. The reversal of 64764593 is 39546746.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32638369 + 32126224 = 5713^2 + 5668^2 .

It is a cyclic number.

It is not a de Polignac number, because 64764593 - 2⁶ = 64764529 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (64764523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32382296 + 32382297.

It is an arithmetic number, because the mean of its divisors is an integer number (32382297).

Almost surely, 2^64764593 is an apocalyptic number.

It is an amenable number.

64764593 is a deficient number, since it is larger than the sum of its proper divisors (1).

64764593 is an equidigital number, since it uses as much as digits as its factorization.

64764593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 44.

The square root of 64764593 is about 8047.6451835304. The cubic root of 64764593 is about 401.5866005097.

The spelling of 64764593 in words is "sixty-four million, seven hundred sixty-four thousand, five hundred ninety-three".