100870517 has 4 divisors (see below), whose sum is σ = 110040576. Its totient is φ = 91700460.

The previous prime is 100870477. The next prime is 100870519. The reversal of 100870517 is 715078001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 715078001 = 11 ⋅65007091.

It is a cyclic number.

It is not a de Polignac number, because 100870517 - 2⁸ = 100870261 is a prime.

It is a super-2 number, since 2×100870517² = 20349722399694578, which contains 22 as substring.

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 100870517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100870519) 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, 4585013 + ... + 4585034.

It is an arithmetic number, because the mean of its divisors is an integer number (27510144).

Almost surely, 2^100870517 is an apocalyptic number.

It is an amenable number.

100870517 is a deficient number, since it is larger than the sum of its proper divisors (9170059).

100870517 is an equidigital number, since it uses as much as digits as its factorization.

100870517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9170058.

The product of its (nonzero) digits is 1960, while the sum is 29.

The square root of 100870517 is about 10043.4315350880. The cubic root of 100870517 is about 465.5018545984.

The spelling of 100870517 in words is "one hundred million, eight hundred seventy thousand, five hundred seventeen".