91874881 has 8 divisors (see below), whose sum is σ = 105066944. Its totient is φ = 78699600.

The previous prime is 91874879. The next prime is 91874911. The reversal of 91874881 is 18847819.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 91874881 - 2¹ = 91874879 is a prime.

It is a super-2 number, since 2×91874881² = 16881987517528322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91874821) 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, 11431 + ... + 17731.

It is an arithmetic number, because the mean of its divisors is an integer number (13133368).

Almost surely, 2^91874881 is an apocalyptic number.

It is an amenable number.

91874881 is a deficient number, since it is larger than the sum of its proper divisors (13192063).

91874881 is a wasteful number, since it uses less digits than its factorization.

91874881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8391.

The product of its digits is 129024, while the sum is 46.

The square root of 91874881 is about 9585.1385488161. The cubic root of 91874881 is about 451.2310014689.

The spelling of 91874881 in words is "ninety-one million, eight hundred seventy-four thousand, eight hundred eighty-one".