91713860 has 48 divisors (see below), whose sum is σ = 221114880. Its totient is φ = 31301760.

The previous prime is 91713859. The next prime is 91713871. The reversal of 91713860 is 6831719.

It is a super-2 number, since 2×91713860² = 16822864232199200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 91713860.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32090 + ... + 34830.

It is an arithmetic number, because the mean of its divisors is an integer number (4606560).

Almost surely, 2^91713860 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 91713860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110557440).

91713860 is an abundant number, since it is smaller than the sum of its proper divisors (129401020).

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

91713860 is a wasteful number, since it uses less digits than its factorization.

91713860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2996 (or 2994 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 91713860 is about 9576.7353518827. The cubic root of 91713860 is about 450.9672363913.

It can be divided in two parts, 9171 and 3860, that added together give a palindrome (13031).

The spelling of 91713860 in words is "ninety-one million, seven hundred thirteen thousand, eight hundred sixty".