101866864 has 20 divisors (see below), whose sum is σ = 215309880. Its totient is φ = 46303040.

The previous prime is 101866859. The next prime is 101866913. The reversal of 101866864 is 468668101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289219 + ... + 289570.

It is an arithmetic number, because the mean of its divisors is an integer number (10765494).

Almost surely, 2^101866864 is an apocalyptic number.

It is an amenable number.

101866864 is an abundant number, since it is smaller than the sum of its proper divisors (113443016).

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

101866864 is a wasteful number, since it uses less digits than its factorization.

101866864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578808 (or 578802 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 101866864 is about 10092.9115719895. The cubic root of 101866864 is about 467.0294983254.

The spelling of 101866864 in words is "one hundred one million, eight hundred sixty-six thousand, eight hundred sixty-four".