64970993 has 2 divisors, whose sum is σ = 64970994. Its totient is φ = 64970992.

The previous prime is 64970987. The next prime is 64970999. The reversal of 64970993 is 39907946.

It is a balanced prime because it is at equal distance from previous prime (64970987) and next prime (64970999).

It can be written as a sum of positive squares in only one way, i.e., 35724529 + 29246464 = 5977^2 + 5408^2 .

It is a cyclic number.

It is not a de Polignac number, because 64970993 - 2¹⁰ = 64969969 is a prime.

It is not a weakly prime, because it can be changed into another prime (64970999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32485496 + 32485497.

It is an arithmetic number, because the mean of its divisors is an integer number (32485497).

Almost surely, 2^64970993 is an apocalyptic number.

It is an amenable number.

64970993 is a deficient number, since it is larger than the sum of its proper divisors (1).

64970993 is an equidigital number, since it uses as much as digits as its factorization.

64970993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 367416, while the sum is 47.

The square root of 64970993 is about 8060.4586097815. The cubic root of 64970993 is about 402.0127571177.

The spelling of 64970993 in words is "sixty-four million, nine hundred seventy thousand, nine hundred ninety-three".