860405 has 32 divisors (see below), whose sum is σ = 1333248. Its totient is φ = 518400.

The previous prime is 860399. The next prime is 860413. The reversal of 860405 is 504068.

860405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 860405 - 2⁶ = 860341 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14075 + ... + 14135.

It is an arithmetic number, because the mean of its divisors is an integer number (41664).

2⁸⁶⁰⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

860405 is a deficient number, since it is larger than the sum of its proper divisors (472843).

860405 is a wasteful number, since it uses less digits than its factorization.

860405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117.

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

The square root of 860405 is about 927.5801852131. The cubic root of 860405 is about 95.1117797824. Note that the first 3 decimals are identical.

The spelling of 860405 in words is "eight hundred sixty thousand, four hundred five".