91861562 has 16 divisors (see below), whose sum is σ = 149022720. Its totient is φ = 42217392.

The previous prime is 91861541. The next prime is 91861571. The reversal of 91861562 is 26516819.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1178 + ... + 13605.

It is an arithmetic number, because the mean of its divisors is an integer number (9313920).

Almost surely, 2^91861562 is an apocalyptic number.

91861562 is a deficient number, since it is larger than the sum of its proper divisors (57161158).

91861562 is a wasteful number, since it uses less digits than its factorization.

91861562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15037.

The product of its digits is 25920, while the sum is 38.

The square root of 91861562 is about 9584.4437501610. The cubic root of 91861562 is about 451.2091955952.

The spelling of 91861562 in words is "ninety-one million, eight hundred sixty-one thousand, five hundred sixty-two".