91613061 has 24 divisors (see below), whose sum is σ = 134784000. Its totient is φ = 59952672.

The previous prime is 91613021. The next prime is 91613063. The reversal of 91613061 is 16031619.

It is not a de Polignac number, because 91613061 - 2²⁶ = 24504197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91613063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 191020 + ... + 191498.

It is an arithmetic number, because the mean of its divisors is an integer number (5616000).

Almost surely, 2^91613061 is an apocalyptic number.

It is an amenable number.

91613061 is a deficient number, since it is larger than the sum of its proper divisors (43170939).

91613061 is a wasteful number, since it uses less digits than its factorization.

91613061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833 (or 830 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 91613061 is about 9571.4712035298. The cubic root of 91613061 is about 450.8019625349.

The spelling of 91613061 in words is "ninety-one million, six hundred thirteen thousand, sixty-one".