100791864 has 80 divisors (see below), whose sum is σ = 285100200. Its totient is φ = 33265728.

The previous prime is 100791863. The next prime is 100791869. The reversal of 100791864 is 468197001.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100791863) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 69919 + ... + 71345.

Almost surely, 2^100791864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100791864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142550100).

100791864 is an abundant number, since it is smaller than the sum of its proper divisors (184308336).

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

100791864 is a wasteful number, since it uses less digits than its factorization.

100791864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554 (or 1541 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 100791864 is about 10039.5151277340. The cubic root of 100791864 is about 465.3808326558.

The spelling of 100791864 in words is "one hundred million, seven hundred ninety-one thousand, eight hundred sixty-four".