64812697 has 2 divisors, whose sum is σ = 64812698. Its totient is φ = 64812696.

The previous prime is 64812691. The next prime is 64812707. The reversal of 64812697 is 79621846.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57927321 + 6885376 = 7611^2 + 2624^2 .

It is a cyclic number.

It is not a de Polignac number, because 64812697 - 2⁷ = 64812569 is a prime.

It is not a weakly prime, because it can be changed into another prime (64812691) 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, 32406348 + 32406349.

It is an arithmetic number, because the mean of its divisors is an integer number (32406349).

Almost surely, 2^64812697 is an apocalyptic number.

It is an amenable number.

64812697 is a deficient number, since it is larger than the sum of its proper divisors (1).

64812697 is an equidigital number, since it uses as much as digits as its factorization.

64812697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 43.

The square root of 64812697 is about 8050.6333291239. The cubic root of 64812697 is about 401.6860022563.

The spelling of 64812697 in words is "sixty-four million, eight hundred twelve thousand, six hundred ninety-seven".