91955616 has 24 divisors (see below), whose sum is σ = 241383744. Its totient is φ = 30651840.

The previous prime is 91955603. The next prime is 91955621. The reversal of 91955616 is 61655919.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

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, 478840 + ... + 479031.

It is an arithmetic number, because the mean of its divisors is an integer number (10057656).

Almost surely, 2^91955616 is an apocalyptic number.

91955616 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

91955616 is an abundant number, since it is smaller than the sum of its proper divisors (149428128).

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

91955616 is a wasteful number, since it uses less digits than its factorization.

91955616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957884 (or 957876 counting only the distinct ones).

The product of its digits is 72900, while the sum is 42.

The square root of 91955616 is about 9589.3490915703. The cubic root of 91955616 is about 451.3631357684.

The spelling of 91955616 in words is "ninety-one million, nine hundred fifty-five thousand, six hundred sixteen".