91674956687616 has 135 divisors (see below), whose sum is σ = 273362244318163. Its totient is φ = 30557859310080.

The previous prime is 91674956687579. The next prime is 91674956687621. The reversal of 91674956687616 is 61678665947619.

The square root of 91674956687616 is 9574704.

It is a perfect power (a square), and thus also a powerful number.

91674956687616 is a `hidden beast` number, since 9 + 1 + 6 + 7 + 49 + 566 + 8 + 7 + 6 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 1378724131 + ... + 1378790621.

Almost surely, 2^{91674956687616} is an apocalyptic number.

91674956687616 is a gapful number since it is divisible by the number (96) formed by its first and last digit.

91674956687616 is the 9574704-th square number.

It is an amenable number.

91674956687616 is an abundant number, since it is smaller than the sum of its proper divisors (181687287630547).

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

91674956687616 is an frugal number, since it uses more digits than its factorization.

91674956687616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133010 (or 66496 counting only the distinct ones).

The product of its digits is 4938071040, while the sum is 81.

91674956687616 divided by its sum of digits (81) gives a square (1131789588736 = 1063856²).

The spelling of 91674956687616 in words is "ninety-one trillion, six hundred seventy-four billion, nine hundred fifty-six million, six hundred eighty-seven thousand, six hundred sixteen".