64802917 has 2 divisors, whose sum is σ = 64802918. Its totient is φ = 64802916.

The previous prime is 64802911. The next prime is 64802921. The reversal of 64802917 is 71920846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37773316 + 27029601 = 6146^2 + 5199^2 .

It is a cyclic number.

It is not a de Polignac number, because 64802917 - 2¹⁵ = 64770149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64802911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32401458 + 32401459.

It is an arithmetic number, because the mean of its divisors is an integer number (32401459).

Almost surely, 2^64802917 is an apocalyptic number.

It is an amenable number.

64802917 is a deficient number, since it is larger than the sum of its proper divisors (1).

64802917 is an equidigital number, since it uses as much as digits as its factorization.

64802917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 64802917 is about 8050.0259005795. The cubic root of 64802917 is about 401.6657969216.

The spelling of 64802917 in words is "sixty-four million, eight hundred two thousand, nine hundred seventeen".