91612679 has 2 divisors, whose sum is σ = 91612680. Its totient is φ = 91612678.

The previous prime is 91612639. The next prime is 91612687. The reversal of 91612679 is 97621619.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91612679 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91612639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45806339 + 45806340.

It is an arithmetic number, because the mean of its divisors is an integer number (45806340).

Almost surely, 2^91612679 is an apocalyptic number.

91612679 is a deficient number, since it is larger than the sum of its proper divisors (1).

91612679 is an equidigital number, since it uses as much as digits as its factorization.

91612679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 41.

The square root of 91612679 is about 9571.4512483740. The cubic root of 91612679 is about 450.8013359627.

The spelling of 91612679 in words is "ninety-one million, six hundred twelve thousand, six hundred seventy-nine".