100661583 has 16 divisors (see below), whose sum is σ = 147393792. Its totient is φ = 60600000.

The previous prime is 100661567. The next prime is 100661621. The reversal of 100661583 is 385166001.

It is not a de Polignac number, because 100661583 - 2⁴ = 100661567 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100661583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100661513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5118 + ... + 15083.

It is an arithmetic number, because the mean of its divisors is an integer number (9212112).

Almost surely, 2^100661583 is an apocalyptic number.

100661583 is a deficient number, since it is larger than the sum of its proper divisors (46732209).

100661583 is a wasteful number, since it uses less digits than its factorization.

100661583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20366.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 100661583 is about 10033.0246187279. The cubic root of 100661583 is about 465.1802330582.

The spelling of 100661583 in words is "one hundred million, six hundred sixty-one thousand, five hundred eighty-three".