91877968 has 40 divisors (see below), whose sum is σ = 219097088. Its totient is φ = 36346752.

The previous prime is 91877963. The next prime is 91878001. The reversal of 91877968 is 86977819.

It is a super-2 number, since 2×91877968² = 16883122007618048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91877963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30096 + ... + 33007.

Almost surely, 2^91877968 is an apocalyptic number.

It is an amenable number.

91877968 is an abundant number, since it is smaller than the sum of its proper divisors (127219120).

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

91877968 is a wasteful number, since it uses less digits than its factorization.

91877968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63131 (or 63125 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 55.

The square root of 91877968 is about 9585.2995779996. The cubic root of 91877968 is about 451.2360552061.

The spelling of 91877968 in words is "ninety-one million, eight hundred seventy-seven thousand, nine hundred sixty-eight".