8659252861 has 4 divisors (see below), whose sum is σ = 9896288992. Its totient is φ = 7422216732.

The previous prime is 8659252853. The next prime is 8659252871. The reversal of 8659252861 is 1682529568.

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.

It is not a de Polignac number, because 8659252861 - 2³ = 8659252853 is a prime.

It is a super-2 number, since 2×8659252861² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8659252799 and 8659252808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8659252841) 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, 618518055 + ... + 618518068.

It is an arithmetic number, because the mean of its divisors is an integer number (2474072248).

Almost surely, 2^8659252861 is an apocalyptic number.

It is an amenable number.

8659252861 is a deficient number, since it is larger than the sum of its proper divisors (1237036131).

8659252861 is a wasteful number, since it uses less digits than its factorization.

8659252861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237036130.

The product of its digits is 2073600, while the sum is 52.

The square root of 8659252861 is about 93055.1065820678. The cubic root of 8659252861 is about 2053.4941686828.

The spelling of 8659252861 in words is "eight billion, six hundred fifty-nine million, two hundred fifty-two thousand, eight hundred sixty-one".