83585821 has 8 divisors (see below), whose sum is σ = 96548544. Its totient is φ = 71517120.

The previous prime is 83585819. The next prime is 83585833. The reversal of 83585821 is 12858538.

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 83585821 - 2¹ = 83585819 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 (83585861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223305 + ... + 223678.

It is an arithmetic number, because the mean of its divisors is an integer number (12068568).

Almost surely, 2^83585821 is an apocalyptic number.

It is an amenable number.

83585821 is a deficient number, since it is larger than the sum of its proper divisors (12962723).

83585821 is a wasteful number, since it uses less digits than its factorization.

83585821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447011.

The product of its digits is 76800, while the sum is 40.

The square root of 83585821 is about 9142.5281514470. The cubic root of 83585821 is about 437.2309241768.

The spelling of 83585821 in words is "eighty-three million, five hundred eighty-five thousand, eight hundred twenty-one".