91500064 has 12 divisors (see below), whose sum is σ = 180140814. Its totient is φ = 45750016.

The previous prime is 91500053. The next prime is 91500089. The reversal of 91500064 is 46000519.

It can be written as a sum of positive squares in only one way, i.e., 67568400 + 23931664 = 8220^2 + 4892^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1429657 + ... + 1429720.

Almost surely, 2^91500064 is an apocalyptic number.

It is an amenable number.

91500064 is a deficient number, since it is larger than the sum of its proper divisors (88640750).

91500064 is a wasteful number, since it uses less digits than its factorization.

91500064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2859387 (or 2859379 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 91500064 is about 9565.5665801875. The cubic root of 91500064 is about 450.6165441885.

The spelling of 91500064 in words is "ninety-one million, five hundred thousand, sixty-four".