861366411 has 12 divisors (see below), whose sum is σ = 1273131288. Its totient is φ = 560889504.

The previous prime is 861366409. The next prime is 861366413. The reversal of 861366411 is 114663168.

861366411 is a `hidden beast` number, since 8 + 6 + 1 + 3 + 6 + 641 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (861366409) and next prime (861366413).

It is not a de Polignac number, because 861366411 - 2¹ = 861366409 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (861366413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1112490 + ... + 1113263.

It is an arithmetic number, because the mean of its divisors is an integer number (106094274).

Almost surely, 2^861366411 is an apocalyptic number.

861366411 is a deficient number, since it is larger than the sum of its proper divisors (411764877).

861366411 is a wasteful number, since it uses less digits than its factorization.

861366411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2225802 (or 2225799 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 861366411 is about 29349.0444648544. The cubic root of 861366411 is about 951.4719235892.

The spelling of 861366411 in words is "eight hundred sixty-one million, three hundred sixty-six thousand, four hundred eleven".