86631253 has 2 divisors, whose sum is σ = 86631254. Its totient is φ = 86631252.

The previous prime is 86631239. The next prime is 86631257. The reversal of 86631253 is 35213668.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79959364 + 6671889 = 8942^2 + 2583^2 .

It is a cyclic number.

It is not a de Polignac number, because 86631253 - 2⁹ = 86630741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86631257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43315626 + 43315627.

It is an arithmetic number, because the mean of its divisors is an integer number (43315627).

Almost surely, 2^86631253 is an apocalyptic number.

It is an amenable number.

86631253 is a deficient number, since it is larger than the sum of its proper divisors (1).

86631253 is an equidigital number, since it uses as much as digits as its factorization.

86631253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 34.

The square root of 86631253 is about 9307.5911491642. The cubic root of 86631253 is about 442.4778466784.

The spelling of 86631253 in words is "eighty-six million, six hundred thirty-one thousand, two hundred fifty-three".