85641493 has 16 divisors (see below), whose sum is σ = 103360000. Its totient is φ = 69319152.

The previous prime is 85641487. The next prime is 85641511. The reversal of 85641493 is 39414658.

It is not a de Polignac number, because 85641493 - 2¹⁷ = 85510421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85641793) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49558 + ... + 51256.

It is an arithmetic number, because the mean of its divisors is an integer number (6460000).

Almost surely, 2^85641493 is an apocalyptic number.

It is an amenable number.

85641493 is a deficient number, since it is larger than the sum of its proper divisors (17718507).

85641493 is a wasteful number, since it uses less digits than its factorization.

85641493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2104.

The product of its digits is 103680, while the sum is 40.

The square root of 85641493 is about 9254.2689068343. The cubic root of 85641493 is about 440.7862886091.

The spelling of 85641493 in words is "eighty-five million, six hundred forty-one thousand, four hundred ninety-three".