91736481 has 16 divisors (see below), whose sum is σ = 125141760. Its totient is φ = 59754240.

The previous prime is 91736479. The next prime is 91736521. The reversal of 91736481 is 18463719.

It is not a de Polignac number, because 91736481 - 2¹ = 91736479 is a prime.

It is a super-2 number, since 2×91736481² = 16831163892526722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91736401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42025 + ... + 44153.

It is an arithmetic number, because the mean of its divisors is an integer number (7821360).

Almost surely, 2^91736481 is an apocalyptic number.

It is an amenable number.

91736481 is a deficient number, since it is larger than the sum of its proper divisors (33405279).

91736481 is a wasteful number, since it uses less digits than its factorization.

91736481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2456.

The product of its digits is 36288, while the sum is 39.

The square root of 91736481 is about 9577.9163182813. The cubic root of 91736481 is about 451.0043099999.

The spelling of 91736481 in words is "ninety-one million, seven hundred thirty-six thousand, four hundred eighty-one".