91683456 has 32 divisors (see below), whose sum is σ = 243535200. Its totient is φ = 30561024.

The previous prime is 91683443. The next prime is 91683491. The reversal of 91683456 is 65438619.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×91683456² = 16811712208207872, which contains 22 as substring.

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, 118996 + ... + 119763.

It is an arithmetic number, because the mean of its divisors is an integer number (7610475).

Almost surely, 2^91683456 is an apocalyptic number.

91683456 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

It is an amenable number.

91683456 is an abundant number, since it is smaller than the sum of its proper divisors (151851744).

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

91683456 is a wasteful number, since it uses less digits than its factorization.

91683456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238776 (or 238764 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 91683456 is about 9575.1478317570. The cubic root of 91683456 is about 450.9173976018.

The spelling of 91683456 in words is "ninety-one million, six hundred eighty-three thousand, four hundred fifty-six".