100345665 has 64 divisors (see below), whose sum is σ = 196816896. Its totient is φ = 42653952.

The previous prime is 100345657. The next prime is 100345697. The reversal of 100345665 is 566543001.

It is not a de Polignac number, because 100345665 - 2³ = 100345657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 88794 + ... + 89916.

It is an arithmetic number, because the mean of its divisors is an integer number (3075264).

Almost surely, 2^100345665 is an apocalyptic number.

100345665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100345665 is a deficient number, since it is larger than the sum of its proper divisors (96471231).

100345665 is a wasteful number, since it uses less digits than its factorization.

100345665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 100345665 is about 10017.2683402213. The cubic root of 100345665 is about 464.6930799245.

Adding to 100345665 its reverse (566543001), we get a palindrome (666888666).

The spelling of 100345665 in words is "one hundred million, three hundred forty-five thousand, six hundred sixty-five".