861514117 has 4 divisors (see below), whose sum is σ = 912191436. Its totient is φ = 810836800.

The previous prime is 861514111. The next prime is 861514123. The reversal of 861514117 is 711415168.

861514117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (861514111) and next prime (861514123).

It can be written as a sum of positive squares in 2 ways, for example, as 618964641 + 242549476 = 24879^2 + 15574^2 .

It is a cyclic number.

It is not a de Polignac number, because 861514117 - 2³ = 861514109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861514111) 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, 25338634 + ... + 25338667.

It is an arithmetic number, because the mean of its divisors is an integer number (228047859).

Almost surely, 2^861514117 is an apocalyptic number.

It is an amenable number.

861514117 is a deficient number, since it is larger than the sum of its proper divisors (50677319).

861514117 is a wasteful number, since it uses less digits than its factorization.

861514117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50677318.

The product of its digits is 6720, while the sum is 34.

The square root of 861514117 is about 29351.5607251131. The cubic root of 861514117 is about 951.5263062065.

The spelling of 861514117 in words is "eight hundred sixty-one million, five hundred fourteen thousand, one hundred seventeen".