91648766 has 32 divisors (see below), whose sum is σ = 154804608. Its totient is φ = 40337440.

The previous prime is 91648759. The next prime is 91648783. The reversal of 91648766 is 66784619.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 91648766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96305 + ... + 97251.

It is an arithmetic number, because the mean of its divisors is an integer number (4837644).

Almost surely, 2^91648766 is an apocalyptic number.

91648766 is a deficient number, since it is larger than the sum of its proper divisors (63155842).

91648766 is a wasteful number, since it uses less digits than its factorization.

91648766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096.

The product of its digits is 435456, while the sum is 47.

The square root of 91648766 is about 9573.3362000924. The cubic root of 91648766 is about 450.8605196638.

The spelling of 91648766 in words is "ninety-one million, six hundred forty-eight thousand, seven hundred sixty-six".