85621434 has 16 divisors (see below), whose sum is σ = 171344160. Its totient is φ = 28523600.

The previous prime is 85621423. The next prime is 85621477. The reversal of 85621434 is 43412658.

It is a junction number, because it is equal to n+sod(n) for n = 85621395 and 85621404.

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, 10984 + ... + 17084.

It is an arithmetic number, because the mean of its divisors is an integer number (10709010).

Almost surely, 2^85621434 is an apocalyptic number.

85621434 is an abundant number, since it is smaller than the sum of its proper divisors (85722726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85621434 is a wasteful number, since it uses less digits than its factorization.

85621434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8445.

The product of its digits is 23040, while the sum is 33.

The square root of 85621434 is about 9253.1850732599. The cubic root of 85621434 is about 440.7518721822.

The spelling of 85621434 in words is "eighty-five million, six hundred twenty-one thousand, four hundred thirty-four".