91613707 has 8 divisors (see below), whose sum is σ = 92431584. Its totient is φ = 90799488.

The previous prime is 91613701. The next prime is 91613747. The reversal of 91613707 is 70731619.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91613707 - 2³ = 91613699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91613701) 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, 74298 + ... + 75520.

It is an arithmetic number, because the mean of its divisors is an integer number (11553948).

Almost surely, 2^91613707 is an apocalyptic number.

91613707 is a deficient number, since it is larger than the sum of its proper divisors (817877).

91613707 is a wasteful number, since it uses less digits than its factorization.

91613707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1829.

The product of its (nonzero) digits is 7938, while the sum is 34.

The square root of 91613707 is about 9571.5049495886. The cubic root of 91613707 is about 450.8030221268.

The spelling of 91613707 in words is "ninety-one million, six hundred thirteen thousand, seven hundred seven".