100975861 has 16 divisors (see below), whose sum is σ = 122693760. Its totient is φ = 81172800.

The previous prime is 100975859. The next prime is 100975877. The reversal of 100975861 is 168579001.

It is a cyclic number.

It is not a de Polignac number, because 100975861 - 2¹ = 100975859 is a prime.

It is a super-2 number, since 2×100975861² = 20392249009382642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 100975861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100975811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9675 + ... + 17191.

It is an arithmetic number, because the mean of its divisors is an integer number (7668360).

Almost surely, 2^100975861 is an apocalyptic number.

It is an amenable number.

100975861 is a deficient number, since it is larger than the sum of its proper divisors (21717899).

100975861 is a wasteful number, since it uses less digits than its factorization.

100975861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7644.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 100975861 is about 10048.6745892182. The cubic root of 100975861 is about 465.6638469819.

The spelling of 100975861 in words is "one hundred million, nine hundred seventy-five thousand, eight hundred sixty-one".