91604148 has 12 divisors (see below), whose sum is σ = 213743040. Its totient is φ = 30534712.

The previous prime is 91604141. The next prime is 91604153. The reversal of 91604148 is 84140619.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91604141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3816828 + ... + 3816851.

It is an arithmetic number, because the mean of its divisors is an integer number (17811920).

Almost surely, 2^91604148 is an apocalyptic number.

It is an amenable number.

91604148 is an abundant number, since it is smaller than the sum of its proper divisors (122138892).

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

91604148 is a wasteful number, since it uses less digits than its factorization.

91604148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7633686 (or 7633684 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 91604148 is about 9571.0055898009. The cubic root of 91604148 is about 450.7873426100.

The spelling of 91604148 in words is "ninety-one million, six hundred four thousand, one hundred forty-eight".