91276764 has 12 divisors (see below), whose sum is σ = 212979144. Its totient is φ = 30425584.

The previous prime is 91276751. The next prime is 91276771. The reversal of 91276764 is 46767219.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3803187 + ... + 3803210.

It is an arithmetic number, because the mean of its divisors is an integer number (17748262).

Almost surely, 2^91276764 is an apocalyptic number.

It is an amenable number.

91276764 is an abundant number, since it is smaller than the sum of its proper divisors (121702380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91276764 is a wasteful number, since it uses less digits than its factorization.

91276764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7606404 (or 7606402 counting only the distinct ones).

The product of its digits is 127008, while the sum is 42.

The square root of 91276764 is about 9553.8873763511. The cubic root of 91276764 is about 450.2496787262.

The spelling of 91276764 in words is "ninety-one million, two hundred seventy-six thousand, seven hundred sixty-four".