65899079 has 2 divisors, whose sum is σ = 65899080. Its totient is φ = 65899078.

The previous prime is 65899073. The next prime is 65899081. The reversal of 65899079 is 97099856.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65899079 - 2⁸ = 65898823 is a prime.

It is a super-2 number, since 2×65899079² = 8685377226096482, which contains 22 as substring.

Together with 65899081, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65899079.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65899073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32949539 + 32949540.

It is an arithmetic number, because the mean of its divisors is an integer number (32949540).

Almost surely, 2^65899079 is an apocalyptic number.

65899079 is a deficient number, since it is larger than the sum of its proper divisors (1).

65899079 is an equidigital number, since it uses as much as digits as its factorization.

65899079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The square root of 65899079 is about 8117.8247702202. The cubic root of 65899079 is about 403.9179141628.

The spelling of 65899079 in words is "sixty-five million, eight hundred ninety-nine thousand, seventy-nine".