100661870 has 8 divisors (see below), whose sum is σ = 181191384. Its totient is φ = 40264744.

The previous prime is 100661863. The next prime is 100661887. The reversal of 100661870 is 78166001.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 5033084 + ... + 5033103.

It is an arithmetic number, because the mean of its divisors is an integer number (22648923).

Almost surely, 2^100661870 is an apocalyptic number.

100661870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100661870 is a deficient number, since it is larger than the sum of its proper divisors (80529514).

100661870 is a wasteful number, since it uses less digits than its factorization.

100661870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10066194.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 100661870 is about 10033.0389214834. The cubic root of 100661870 is about 465.1806751554.

The spelling of 100661870 in words is "one hundred million, six hundred sixty-one thousand, eight hundred seventy".