85405886 has 8 divisors (see below), whose sum is σ = 128585880. Its totient is φ = 42543928.

The previous prime is 85405871. The next prime is 85405889. The reversal of 85405886 is 68850458.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85405889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78836 + ... + 79911.

It is an arithmetic number, because the mean of its divisors is an integer number (16073235).

Almost surely, 2^85405886 is an apocalyptic number.

85405886 is a deficient number, since it is larger than the sum of its proper divisors (43179994).

85405886 is a wasteful number, since it uses less digits than its factorization.

85405886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159018.

The product of its (nonzero) digits is 307200, while the sum is 44.

The square root of 85405886 is about 9241.5305009506. The cubic root of 85405886 is about 440.3817038967.

The spelling of 85405886 in words is "eighty-five million, four hundred five thousand, eight hundred eighty-six".