91063617 has 4 divisors (see below), whose sum is σ = 121418160. Its totient is φ = 60709076.

The previous prime is 91063607. The next prime is 91063633. The reversal of 91063617 is 71636019.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 91063617 - 2¹⁴ = 91047233 is a prime.

It is a super-2 number, since 2×91063617² = 16585164682245378, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91063607) 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, 15177267 + ... + 15177272.

It is an arithmetic number, because the mean of its divisors is an integer number (30354540).

Almost surely, 2^91063617 is an apocalyptic number.

It is an amenable number.

91063617 is a deficient number, since it is larger than the sum of its proper divisors (30354543).

91063617 is a wasteful number, since it uses less digits than its factorization.

91063617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30354542.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 91063617 is about 9542.7258684298. The cubic root of 91063617 is about 449.8989353285.

The spelling of 91063617 in words is "ninety-one million, sixty-three thousand, six hundred seventeen".