64929617 has 2 divisors, whose sum is σ = 64929618. Its totient is φ = 64929616.

The previous prime is 64929589. The next prime is 64929619. The reversal of 64929617 is 71692946.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49688401 + 15241216 = 7049^2 + 3904^2 .

It is a cyclic number.

It is not a de Polignac number, because 64929617 - 2²² = 60735313 is a prime.

It is a super-3 number, since 3×64929617³ (a number of 24 digits) contains 333 as substring.

Together with 64929619, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64929619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32464808 + 32464809.

It is an arithmetic number, because the mean of its divisors is an integer number (32464809).

Almost surely, 2^64929617 is an apocalyptic number.

It is an amenable number.

64929617 is a deficient number, since it is larger than the sum of its proper divisors (1).

64929617 is an equidigital number, since it uses as much as digits as its factorization.

64929617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 44.

The square root of 64929617 is about 8057.8915976824. The cubic root of 64929617 is about 401.9273999898.

The spelling of 64929617 in words is "sixty-four million, nine hundred twenty-nine thousand, six hundred seventeen".