85321743 has 32 divisors (see below), whose sum is σ = 129690624. Its totient is φ = 49496832.

The previous prime is 85321739. The next prime is 85321777. The reversal of 85321743 is 34712358.

It is not a de Polignac number, because 85321743 - 2² = 85321739 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85321783) 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 31 ways as a sum of consecutive naturals, for example, 64830 + ... + 66132.

It is an arithmetic number, because the mean of its divisors is an integer number (4052832).

Almost surely, 2^85321743 is an apocalyptic number.

85321743 is a deficient number, since it is larger than the sum of its proper divisors (44368881).

85321743 is a wasteful number, since it uses less digits than its factorization.

85321743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1415.

The product of its digits is 20160, while the sum is 33.

The square root of 85321743 is about 9236.9769405363. The cubic root of 85321743 is about 440.2370330973.

The spelling of 85321743 in words is "eighty-five million, three hundred twenty-one thousand, seven hundred forty-three".