100661867 has 24 divisors (see below), whose sum is σ = 113202000. Its totient is φ = 89190720.

The previous prime is 100661863. The next prime is 100661887. The reversal of 100661867 is 768166001.

It is not a de Polignac number, because 100661867 - 2² = 100661863 is a prime.

It is a super-2 number, since 2×100661867² = 20265622935851378, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (100661863) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 675509 + ... + 675657.

It is an arithmetic number, because the mean of its divisors is an integer number (4716750).

Almost surely, 2^100661867 is an apocalyptic number.

100661867 is a deficient number, since it is larger than the sum of its proper divisors (12540133).

100661867 is a wasteful number, since it uses less digits than its factorization.

100661867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 100661867 is about 10033.0387719773. The cubic root of 100661867 is about 465.1806705341.

The spelling of 100661867 in words is "one hundred million, six hundred sixty-one thousand, eight hundred sixty-seven".