91083630 has 32 divisors (see below), whose sum is σ = 238474368. Its totient is φ = 22080800.

The previous prime is 91083607. The next prime is 91083631. The reversal of 91083630 is 3638019.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91083631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137676 + ... + 138335.

It is an arithmetic number, because the mean of its divisors is an integer number (7452324).

Almost surely, 2^91083630 is an apocalyptic number.

91083630 is an abundant number, since it is smaller than the sum of its proper divisors (147390738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91083630 is a wasteful number, since it uses less digits than its factorization.

91083630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276032.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 91083630 is about 9543.7744105778. The cubic root of 91083630 is about 449.9318909265.

The spelling of 91083630 in words is "ninety-one million, eighty-three thousand, six hundred thirty".