91656245 has 16 divisors (see below), whose sum is σ = 112300032. Its totient is φ = 71798400.

The previous prime is 91656241. The next prime is 91656259. The reversal of 91656245 is 54265619.

It is not a de Polignac number, because 91656245 - 2² = 91656241 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 91656199 and 91656208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91656241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54284 + ... + 55946.

It is an arithmetic number, because the mean of its divisors is an integer number (7018752).

Almost surely, 2^91656245 is an apocalyptic number.

It is an amenable number.

91656245 is a deficient number, since it is larger than the sum of its proper divisors (20643787).

91656245 is a wasteful number, since it uses less digits than its factorization.

91656245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892.

The product of its digits is 64800, while the sum is 38.

The square root of 91656245 is about 9573.7268083020. The cubic root of 91656245 is about 450.8727834918.

The spelling of 91656245 in words is "ninety-one million, six hundred fifty-six thousand, two hundred forty-five".