85862639 has 2 divisors, whose sum is σ = 85862640. Its totient is φ = 85862638.

The previous prime is 85862629. The next prime is 85862683. The reversal of 85862639 is 93626858.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85862639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85862593 and 85862602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85862629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42931319 + 42931320.

It is an arithmetic number, because the mean of its divisors is an integer number (42931320).

Almost surely, 2^85862639 is an apocalyptic number.

85862639 is a deficient number, since it is larger than the sum of its proper divisors (1).

85862639 is an equidigital number, since it uses as much as digits as its factorization.

85862639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 47.

The square root of 85862639 is about 9266.2095270936. The cubic root of 85862639 is about 441.1653663112.

The spelling of 85862639 in words is "eighty-five million, eight hundred sixty-two thousand, six hundred thirty-nine".