91875684 has 48 divisors (see below), whose sum is σ = 229376448. Its totient is φ = 28520448.

The previous prime is 91875677. The next prime is 91875689. The reversal of 91875684 is 48657819.

91875684 = T₄₈₅ + T₄₈₆ + ... + T₈₇₂.

It is a super-2 number, since 2×91875684² = 16882282620935712, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (91875689) 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, 17467 + ... + 22109.

It is an arithmetic number, because the mean of its divisors is an integer number (4778676).

Almost surely, 2^91875684 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91875684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114688224).

91875684 is an abundant number, since it is smaller than the sum of its proper divisors (137500764).

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

91875684 is a wasteful number, since it uses less digits than its factorization.

91875684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4764 (or 4762 counting only the distinct ones).

The product of its digits is 483840, while the sum is 48.

The square root of 91875684 is about 9585.1804364863. The cubic root of 91875684 is about 451.2323160735.

The spelling of 91875684 in words is "ninety-one million, eight hundred seventy-five thousand, six hundred eighty-four".