91613606 has 16 divisors (see below), whose sum is σ = 157199616. Its totient is φ = 39226056.

The previous prime is 91613603. The next prime is 91613647. The reversal of 91613606 is 60631619.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91613603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16745 + ... + 21531.

It is an arithmetic number, because the mean of its divisors is an integer number (9824976).

Almost surely, 2^91613606 is an apocalyptic number.

91613606 is a deficient number, since it is larger than the sum of its proper divisors (65586010).

91613606 is a wasteful number, since it uses less digits than its factorization.

91613606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6163.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 91613606 is about 9571.4996735099. The cubic root of 91613606 is about 450.8028564634.

The spelling of 91613606 in words is "ninety-one million, six hundred thirteen thousand, six hundred six".