85161607 has 2 divisors, whose sum is σ = 85161608. Its totient is φ = 85161606.

The previous prime is 85161563. The next prime is 85161611. The reversal of 85161607 is 70616158.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85161607 - 2²³ = 76772999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85161647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42580803 + 42580804.

It is an arithmetic number, because the mean of its divisors is an integer number (42580804).

Almost surely, 2^85161607 is an apocalyptic number.

85161607 is a deficient number, since it is larger than the sum of its proper divisors (1).

85161607 is an equidigital number, since it uses as much as digits as its factorization.

85161607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 85161607 is about 9228.3046655385. The cubic root of 85161607 is about 439.9614411803.

It can be divided in two parts, 8 and 5161607, that added together give a palindrome (5161615).

The spelling of 85161607 in words is "eighty-five million, one hundred sixty-one thousand, six hundred seven".