91768671 has 12 divisors (see below), whose sum is σ = 133350672. Its totient is φ = 60811776.

The previous prime is 91768639. The next prime is 91768679. The reversal of 91768671 is 17686719.

It is not a de Polignac number, because 91768671 - 2⁵ = 91768639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91768679) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29026 + ... + 32031.

It is an arithmetic number, because the mean of its divisors is an integer number (11112556).

Almost surely, 2^91768671 is an apocalyptic number.

91768671 is a deficient number, since it is larger than the sum of its proper divisors (41582001).

91768671 is a wasteful number, since it uses less digits than its factorization.

91768671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61230 (or 61227 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 91768671 is about 9579.5965990223. The cubic root of 91768671 is about 451.0570557590.

The spelling of 91768671 in words is "ninety-one million, seven hundred sixty-eight thousand, six hundred seventy-one".