91306916 has 24 divisors (see below), whose sum is σ = 163840320. Its totient is φ = 44506592.

The previous prime is 91306907. The next prime is 91306921. The reversal of 91306916 is 61960319.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34115 + ... + 36693.

It is an arithmetic number, because the mean of its divisors is an integer number (6826680).

Almost surely, 2^91306916 is an apocalyptic number.

It is an amenable number.

91306916 is a deficient number, since it is larger than the sum of its proper divisors (72533404).

91306916 is a wasteful number, since it uses less digits than its factorization.

91306916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2803 (or 2801 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 91306916 is about 9555.4652424673. The cubic root of 91306916 is about 450.2992511589.

The spelling of 91306916 in words is "ninety-one million, three hundred six thousand, nine hundred sixteen".