85890601 has 4 divisors (see below), whose sum is σ = 85909252. Its totient is φ = 85871952.

The previous prime is 85890593. The next prime is 85890611. The reversal of 85890601 is 10609858.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30239001 + 55651600 = 5499^2 + 7460^2 .

It is a cyclic number.

It is not a de Polignac number, because 85890601 - 2³ = 85890593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85890611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3115 + ... + 13471.

It is an arithmetic number, because the mean of its divisors is an integer number (21477313).

Almost surely, 2^85890601 is an apocalyptic number.

It is an amenable number.

85890601 is a deficient number, since it is larger than the sum of its proper divisors (18651).

85890601 is a wasteful number, since it uses less digits than its factorization.

85890601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18650.

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 85890601 is about 9267.7182197130. The cubic root of 85890601 is about 441.2132510383.

The spelling of 85890601 in words is "eighty-five million, eight hundred ninety thousand, six hundred one".