91064761 has 4 divisors (see below), whose sum is σ = 91302912. Its totient is φ = 90826612.

The previous prime is 91064749. The next prime is 91064773. The reversal of 91064761 is 16746019.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (91064749) and next prime (91064773).

It is a cyclic number.

It is not a de Polignac number, because 91064761 - 2²⁵ = 57510329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91064791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118501 + ... + 119266.

It is an arithmetic number, because the mean of its divisors is an integer number (22825728).

Almost surely, 2^91064761 is an apocalyptic number.

It is an amenable number.

91064761 is a deficient number, since it is larger than the sum of its proper divisors (238151).

91064761 is a wasteful number, since it uses less digits than its factorization.

91064761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238150.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 91064761 is about 9542.7858091859. The cubic root of 91064761 is about 449.9008192943.

The spelling of 91064761 in words is "ninety-one million, sixty-four thousand, seven hundred sixty-one".