91907064 has 48 divisors (see below), whose sum is σ = 256950720. Its totient is φ = 29646720.

The previous prime is 91907063. The next prime is 91907077. The reversal of 91907064 is 46070919.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91907063) 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, 18357 + ... + 22820.

It is an arithmetic number, because the mean of its divisors is an integer number (5353140).

Almost surely, 2^91907064 is an apocalyptic number.

It is an amenable number.

91907064 is an abundant number, since it is smaller than the sum of its proper divisors (165043656).

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

91907064 is a wasteful number, since it uses less digits than its factorization.

91907064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41220 (or 41213 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 91907064 is about 9586.8171986327. The cubic root of 91907064 is about 451.2836827961.

The spelling of 91907064 in words is "ninety-one million, nine hundred seven thousand, sixty-four".