91536407 has 2 divisors, whose sum is σ = 91536408. Its totient is φ = 91536406.

The previous prime is 91536391. The next prime is 91536457. The reversal of 91536407 is 70463519.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91536407 - 2⁴ = 91536391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91536457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45768203 + 45768204.

It is an arithmetic number, because the mean of its divisors is an integer number (45768204).

Almost surely, 2^91536407 is an apocalyptic number.

91536407 is a deficient number, since it is larger than the sum of its proper divisors (1).

91536407 is an equidigital number, since it uses as much as digits as its factorization.

91536407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 91536407 is about 9567.4660699686. The cubic root of 91536407 is about 450.6761965669.

The spelling of 91536407 in words is "ninety-one million, five hundred thirty-six thousand, four hundred seven".