91963868 has 6 divisors (see below), whose sum is σ = 160936776. Its totient is φ = 45981932.

The previous prime is 91963811. The next prime is 91963873. The reversal of 91963868 is 86836919.

It is a super-3 number, since 3×91963868³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11495480 + ... + 11495487.

It is an arithmetic number, because the mean of its divisors is an integer number (26822796).

Almost surely, 2^91963868 is an apocalyptic number.

It is an amenable number.

91963868 is a deficient number, since it is larger than the sum of its proper divisors (68972908).

91963868 is a wasteful number, since it uses less digits than its factorization.

91963868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22990971 (or 22990969 counting only the distinct ones).

The product of its digits is 559872, while the sum is 50.

The square root of 91963868 is about 9589.7793509548. The cubic root of 91963868 is about 451.3766369818.

The spelling of 91963868 in words is "ninety-one million, nine hundred sixty-three thousand, eight hundred sixty-eight".