91767916 has 6 divisors (see below), whose sum is σ = 160593860. Its totient is φ = 45883956.

The previous prime is 91767911. The next prime is 91767931. The reversal of 91767916 is 61976719.

It is not an unprimeable number, because it can be changed into a prime (91767911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11470986 + ... + 11470993.

Almost surely, 2^91767916 is an apocalyptic number.

It is an amenable number.

91767916 is a deficient number, since it is larger than the sum of its proper divisors (68825944).

91767916 is a wasteful number, since it uses less digits than its factorization.

91767916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22941983 (or 22941981 counting only the distinct ones).

The product of its digits is 142884, while the sum is 46.

The square root of 91767916 is about 9579.5571922715. The cubic root of 91767916 is about 451.0558187754.

The spelling of 91767916 in words is "ninety-one million, seven hundred sixty-seven thousand, nine hundred sixteen".