64801613 has 2 divisors, whose sum is σ = 64801614. Its totient is φ = 64801612.

The previous prime is 64801601. The next prime is 64801621. The reversal of 64801613 is 31610846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40170244 + 24631369 = 6338^2 + 4963^2 .

It is a cyclic number.

It is not a de Polignac number, because 64801613 - 2⁶ = 64801549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64801643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32400806 + 32400807.

It is an arithmetic number, because the mean of its divisors is an integer number (32400807).

Almost surely, 2^64801613 is an apocalyptic number.

It is an amenable number.

64801613 is a deficient number, since it is larger than the sum of its proper divisors (1).

64801613 is an equidigital number, since it uses as much as digits as its factorization.

64801613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 64801613 is about 8049.9449066438. The cubic root of 64801613 is about 401.6631027233.

The spelling of 64801613 in words is "sixty-four million, eight hundred one thousand, six hundred thirteen".