85714631 has 2 divisors, whose sum is σ = 85714632. Its totient is φ = 85714630.

The previous prime is 85714619. The next prime is 85714639. The reversal of 85714631 is 13641758.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85714631 is a prime.

It is a super-2 number, since 2×85714631² = 14693995934932322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85714591 and 85714600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85714639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42857315 + 42857316.

It is an arithmetic number, because the mean of its divisors is an integer number (42857316).

Almost surely, 2^85714631 is an apocalyptic number.

85714631 is a deficient number, since it is larger than the sum of its proper divisors (1).

85714631 is an equidigital number, since it uses as much as digits as its factorization.

85714631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 35.

The square root of 85714631 is about 9258.2196452666. The cubic root of 85714631 is about 440.9117303533.

The spelling of 85714631 in words is "eighty-five million, seven hundred fourteen thousand, six hundred thirty-one".