91063772 has 12 divisors (see below), whose sum is σ = 159436200. Its totient is φ = 45510576.

The previous prime is 91063759. The next prime is 91063783. The reversal of 91063772 is 27736019.

It is a super-2 number, since 2×91063772² = 16585221141735968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7979 + ... + 15677.

It is an arithmetic number, because the mean of its divisors is an integer number (13286350).

Almost surely, 2^91063772 is an apocalyptic number.

It is an amenable number.

91063772 is a deficient number, since it is larger than the sum of its proper divisors (68372428).

91063772 is a wasteful number, since it uses less digits than its factorization.

91063772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10660 (or 10658 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 91063772 is about 9542.7339897956. The cubic root of 91063772 is about 449.8991905870.

The spelling of 91063772 in words is "ninety-one million, sixty-three thousand, seven hundred seventy-two".