85466821 has 8 divisors (see below), whose sum is σ = 95220864. Its totient is φ = 76043520.

The previous prime is 85466819. The next prime is 85466891. The reversal of 85466821 is 12866458.

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

It is a cyclic number.

It is not a de Polignac number, because 85466821 - 2¹ = 85466819 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85466891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82140 + ... + 83173.

It is an arithmetic number, because the mean of its divisors is an integer number (11902608).

Almost surely, 2^85466821 is an apocalyptic number.

It is an amenable number.

85466821 is a deficient number, since it is larger than the sum of its proper divisors (9754043).

85466821 is a wasteful number, since it uses less digits than its factorization.

85466821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165371.

The product of its digits is 92160, while the sum is 40.

The square root of 85466821 is about 9244.8267155204. The cubic root of 85466821 is about 440.4864128380.

The spelling of 85466821 in words is "eighty-five million, four hundred sixty-six thousand, eight hundred twenty-one".