860884621 has 2 divisors, whose sum is σ = 860884622. Its totient is φ = 860884620.

The previous prime is 860884589. The next prime is 860884627. The reversal of 860884621 is 126488068.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 743162121 + 117722500 = 27261^2 + 10850^2 .

It is a cyclic number.

It is not a de Polignac number, because 860884621 - 2⁵ = 860884589 is a prime.

It is a super-2 number, since 2×860884621² = 1482244661348627282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (860884627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430442310 + 430442311.

It is an arithmetic number, because the mean of its divisors is an integer number (430442311).

Almost surely, 2^860884621 is an apocalyptic number.

It is an amenable number.

860884621 is a deficient number, since it is larger than the sum of its proper divisors (1).

860884621 is an equidigital number, since it uses as much as digits as its factorization.

860884621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 147456, while the sum is 43.

The square root of 860884621 is about 29340.8353834720. The cubic root of 860884621 is about 951.2944941985.

It can be divided in two parts, 86088 and 4621, that added together give a palindrome (90709).

The spelling of 860884621 in words is "eight hundred sixty million, eight hundred eighty-four thousand, six hundred twenty-one".