100539985 has 32 divisors (see below), whose sum is σ = 149587200. Its totient is φ = 63168768.

The previous prime is 100539961. The next prime is 100539997. The reversal of 100539985 is 589935001.

It is not a de Polignac number, because 100539985 - 2²¹ = 98442833 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67054 + ... + 68536.

It is an arithmetic number, because the mean of its divisors is an integer number (4674600).

Almost surely, 2^100539985 is an apocalyptic number.

It is an amenable number.

100539985 is a deficient number, since it is larger than the sum of its proper divisors (49047215).

100539985 is a wasteful number, since it uses less digits than its factorization.

100539985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657.

The product of its (nonzero) digits is 48600, while the sum is 40.

The square root of 100539985 is about 10026.9629001009. The cubic root of 100539985 is about 464.9928468472.

The spelling of 100539985 in words is "one hundred million, five hundred thirty-nine thousand, nine hundred eighty-five".