101689986 has 16 divisors (see below), whose sum is σ = 208877184. Its totient is φ = 32980464.

The previous prime is 101689933. The next prime is 101689993. The reversal of 101689986 is 689986101.

It is a Curzon number.

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, 228810 + ... + 229253.

It is an arithmetic number, because the mean of its divisors is an integer number (13054824).

Almost surely, 2^101689986 is an apocalyptic number.

101689986 is an abundant number, since it is smaller than the sum of its proper divisors (107187198).

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

101689986 is a wasteful number, since it uses less digits than its factorization.

101689986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458105.

The product of its (nonzero) digits is 186624, while the sum is 48.

The square root of 101689986 is about 10084.1452786044. The cubic root of 101689986 is about 466.7590305841.

The spelling of 101689986 in words is "one hundred one million, six hundred eighty-nine thousand, nine hundred eighty-six".