85284621 has 24 divisors (see below), whose sum is σ = 132986880. Its totient is φ = 52505376.

The previous prime is 85284613. The next prime is 85284623. The reversal of 85284621 is 12648258.

85284621 is a `hidden beast` number, since 8 + 5 + 28 + 4 + 621 = 666.

It is not a de Polignac number, because 85284621 - 2³ = 85284613 is a prime.

It is a super-2 number, since 2×85284621² = 14546933158227282, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85284623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1101 + ... + 13106.

It is an arithmetic number, because the mean of its divisors is an integer number (5541120).

Almost surely, 2^85284621 is an apocalyptic number.

It is an amenable number.

85284621 is a deficient number, since it is larger than the sum of its proper divisors (47702259).

85284621 is a wasteful number, since it uses less digits than its factorization.

85284621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14265 (or 14262 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 85284621 is about 9234.9672982637. The cubic root of 85284621 is about 440.1731773545.

It can be divided in two parts, 85284 and 621, that added together give a triangular number (85905 = T₄₁₄).

The spelling of 85284621 in words is "eighty-five million, two hundred eighty-four thousand, six hundred twenty-one".