65089979 has 2 divisors, whose sum is σ = 65089980. Its totient is φ = 65089978.

The previous prime is 65089963. The next prime is 65090009. The reversal of 65089979 is 97998056.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 65089979 - 2⁴ = 65089963 is a prime.

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 65089979.

It is not a weakly prime, because it can be changed into another prime (65089279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32544989 + 32544990.

It is an arithmetic number, because the mean of its divisors is an integer number (32544990).

Almost surely, 2^65089979 is an apocalyptic number.

65089979 is a deficient number, since it is larger than the sum of its proper divisors (1).

65089979 is an equidigital number, since it uses as much as digits as its factorization.

65089979 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 65089979 is about 8067.8360791479. The cubic root of 65089979 is about 402.2580189740.

The spelling of 65089979 in words is "sixty-five million, eighty-nine thousand, nine hundred seventy-nine".