100717145 has 16 divisors (see below), whose sum is σ = 128414160. Its totient is φ = 75688704.

The previous prime is 100717139. The next prime is 100717159. The reversal of 100717145 is 541717001.

It can be written as a sum of positive squares in 8 ways, for example, as 27237961 + 73479184 = 5219^2 + 8572^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100717145 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4022 + ... + 14751.

It is an arithmetic number, because the mean of its divisors is an integer number (8025885).

Almost surely, 2^100717145 is an apocalyptic number.

It is an amenable number.

100717145 is a deficient number, since it is larger than the sum of its proper divisors (27697015).

100717145 is a wasteful number, since it uses less digits than its factorization.

100717145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18844.

The product of its (nonzero) digits is 980, while the sum is 26.

The square root of 100717145 is about 10035.7931923690. The cubic root of 100717145 is about 465.2658055588.

The spelling of 100717145 in words is "one hundred million, seven hundred seventeen thousand, one hundred forty-five".