91613060 has 192 divisors, whose sum is σ = 263208960. Its totient is φ = 25920000.

The previous prime is 91613021. The next prime is 91613063. The reversal of 91613060 is 6031619.

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 63 ways as a sum of consecutive naturals, for example, 907010 + ... + 907110.

It is an arithmetic number, because the mean of its divisors is an integer number (1370880).

Almost surely, 2^91613060 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91613060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131604480).

91613060 is an abundant number, since it is smaller than the sum of its proper divisors (171595900).

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

91613060 is a wasteful number, since it uses less digits than its factorization.

91613060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 91613060 is about 9571.4711512912. The cubic root of 91613060 is about 450.8019608947.

Adding to 91613060 its reverse (6031619), we get a palindrome (97644679).

It can be divided in two parts, 9161 and 3060, that added together give a palindrome (12221).

The spelling of 91613060 in words is "ninety-one million, six hundred thirteen thousand, sixty".