85406 has 4 divisors (see below), whose sum is σ = 128112. Its totient is φ = 42702.

The previous prime is 85381. The next prime is 85411. The reversal of 85406 is 60458.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21350 + ... + 21353.

It is an arithmetic number, because the mean of its divisors is an integer number (32028).

2⁸⁵⁴⁰⁶ is an apocalyptic number.

85406 is a deficient number, since it is larger than the sum of its proper divisors (42706).

85406 is a wasteful number, since it uses less digits than its factorization.

85406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42705.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 85406 is about 292.2430495324. The cubic root of 85406 is about 44.0381899837.

The spelling of 85406 in words is "eighty-five thousand, four hundred six".