85883621 has 2 divisors, whose sum is σ = 85883622. Its totient is φ = 85883620.

The previous prime is 85883533. The next prime is 85883627. The reversal of 85883621 is 12638858.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50908225 + 34975396 = 7135^2 + 5914^2 .

It is a cyclic number.

It is not a de Polignac number, because 85883621 - 2¹⁴ = 85867237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85883627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42941810 + 42941811.

It is an arithmetic number, because the mean of its divisors is an integer number (42941811).

Almost surely, 2^85883621 is an apocalyptic number.

It is an amenable number.

85883621 is a deficient number, since it is larger than the sum of its proper divisors (1).

85883621 is an equidigital number, since it uses as much as digits as its factorization.

85883621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92160, while the sum is 41.

The square root of 85883621 is about 9267.3416360896. The cubic root of 85883621 is about 441.2012988112.

The spelling of 85883621 in words is "eighty-five million, eight hundred eighty-three thousand, six hundred twenty-one".