100995997 has 16 divisors (see below), whose sum is σ = 111912192. Its totient is φ = 90734080.

The previous prime is 100995971. The next prime is 100996003. The reversal of 100995997 is 799599001.

It is a cyclic number.

It is not a de Polignac number, because 100995997 - 2¹⁵ = 100963229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100995997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100995907) 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, 31218 + ... + 34300.

It is an arithmetic number, because the mean of its divisors is an integer number (6994512).

Almost surely, 2^100995997 is an apocalyptic number.

100995997 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

100995997 is a deficient number, since it is larger than the sum of its proper divisors (10916195).

100995997 is a wasteful number, since it uses less digits than its factorization.

100995997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3188.

The product of its (nonzero) digits is 229635, while the sum is 49.

The square root of 100995997 is about 10049.6764624539. The cubic root of 100995997 is about 465.6947982209.

The spelling of 100995997 in words is "one hundred million, nine hundred ninety-five thousand, nine hundred ninety-seven".