91368747 has 6 divisors (see below), whose sum is σ = 131977092. Its totient is φ = 60912492.

The previous prime is 91368721. The next prime is 91368779. The reversal of 91368747 is 74786319.

It is not a de Polignac number, because 91368747 - 2¹⁰ = 91367723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91360747) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5076033 + ... + 5076050.

It is an arithmetic number, because the mean of its divisors is an integer number (21996182).

Almost surely, 2^91368747 is an apocalyptic number.

91368747 is a deficient number, since it is larger than the sum of its proper divisors (40608345).

91368747 is a wasteful number, since it uses less digits than its factorization.

91368747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10152089 (or 10152086 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 91368747 is about 9558.7000685240. The cubic root of 91368747 is about 450.4008724154.

The spelling of 91368747 in words is "ninety-one million, three hundred sixty-eight thousand, seven hundred forty-seven".