85721627 has 2 divisors, whose sum is σ = 85721628. Its totient is φ = 85721626.

The previous prime is 85721569. The next prime is 85721639. The reversal of 85721627 is 72612758.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85721627 is a prime.

It is not a weakly prime, because it can be changed into another prime (85721227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42860813 + 42860814.

It is an arithmetic number, because the mean of its divisors is an integer number (42860814).

Almost surely, 2^85721627 is an apocalyptic number.

85721627 is a deficient number, since it is larger than the sum of its proper divisors (1).

85721627 is an equidigital number, since it uses as much as digits as its factorization.

85721627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 38.

The square root of 85721627 is about 9258.5974639791. The cubic root of 85721627 is about 440.9237257171.

The spelling of 85721627 in words is "eighty-five million, seven hundred twenty-one thousand, six hundred twenty-seven".