85490 has 16 divisors (see below), whose sum is σ = 157248. Its totient is φ = 33456.

The previous prime is 85487. The next prime is 85513. The reversal of 85490 is 9458.

It is an alternating number because its digits alternate between even and odd.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 85490.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 779 + ... + 881.

It is an arithmetic number, because the mean of its divisors is an integer number (9828).

2⁸⁵⁴⁹⁰ is an apocalyptic number.

85490 is a deficient number, since it is larger than the sum of its proper divisors (71758).

85490 is a wasteful number, since it uses less digits than its factorization.

85490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 85490 is about 292.3867302050. The cubic root of 85490 is about 44.0526229894.

It can be divided in two parts, 85 and 490, that added together give a palindrome (575).

The spelling of 85490 in words is "eighty-five thousand, four hundred ninety".