91156968 has 64 divisors (see below), whose sum is σ = 289392000. Its totient is φ = 26044416.

The previous prime is 91156963. The next prime is 91156973. The reversal of 91156968 is 86965119.

It is an interprime number because it is at equal distance from previous prime (91156963) and next prime (91156973).

It is not an unprimeable number, because it can be changed into a prime (91156963) 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, 28633 + ... + 31656.

It is an arithmetic number, because the mean of its divisors is an integer number (4521750).

Almost surely, 2^91156968 is an apocalyptic number.

It is an amenable number.

91156968 is an abundant number, since it is smaller than the sum of its proper divisors (198235032).

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

91156968 is a wasteful number, since it uses less digits than its factorization.

91156968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60311 (or 60301 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 91156968 is about 9547.6158280484. The cubic root of 91156968 is about 450.0526160699.

The spelling of 91156968 in words is "ninety-one million, one hundred fifty-six thousand, nine hundred sixty-eight".