85321405 has 8 divisors (see below), whose sum is σ = 110261592. Its totient is φ = 63006528.

The previous prime is 85321399. The next prime is 85321429. The reversal of 85321405 is 50412358.

It can be written as a sum of positive squares in 4 ways, for example, as 5433561 + 79887844 = 2331^2 + 8938^2 .

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

It is not a de Polignac number, because 85321405 - 2¹³ = 85313213 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 656254 + ... + 656383.

It is an arithmetic number, because the mean of its divisors is an integer number (13782699).

Almost surely, 2^85321405 is an apocalyptic number.

It is an amenable number.

85321405 is a deficient number, since it is larger than the sum of its proper divisors (24940187).

85321405 is a wasteful number, since it uses less digits than its factorization.

85321405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312655.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 85321405 is about 9236.9586444890. The cubic root of 85321405 is about 440.2364517671.

The spelling of 85321405 in words is "eighty-five million, three hundred twenty-one thousand, four hundred five".