100560665 has 4 divisors (see below), whose sum is σ = 120672804. Its totient is φ = 80448528.

The previous prime is 100560653. The next prime is 100560667. The reversal of 100560665 is 566065001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 566065001 = 863 ⋅655927.

It can be written as a sum of positive squares in 2 ways, for example, as 33500944 + 67059721 = 5788^2 + 8189^2 .

It is a cyclic number.

It is not a de Polignac number, because 100560665 - 2⁸ = 100560409 is a prime.

It is a super-2 number, since 2×100560665² = 20224894690484450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100560667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10056062 + ... + 10056071.

It is an arithmetic number, because the mean of its divisors is an integer number (30168201).

Almost surely, 2^100560665 is an apocalyptic number.

It is an amenable number.

100560665 is a deficient number, since it is larger than the sum of its proper divisors (20112139).

100560665 is an equidigital number, since it uses as much as digits as its factorization.

100560665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20112138.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 100560665 is about 10027.9940666117. The cubic root of 100560665 is about 465.0247260140.

The spelling of 100560665 in words is "one hundred million, five hundred sixty thousand, six hundred sixty-five".