83621208 has 64 divisors (see below), whose sum is σ = 231235200. Its totient is φ = 24986880.

The previous prime is 83621207. The next prime is 83621267. The reversal of 83621208 is 80212638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83621207) 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 15 ways as a sum of consecutive naturals, for example, 17103 + ... + 21441.

It is an arithmetic number, because the mean of its divisors is an integer number (3613050).

Almost surely, 2^83621208 is an apocalyptic number.

83621208 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83621208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115617600).

83621208 is an abundant number, since it is smaller than the sum of its proper divisors (147613992).

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

83621208 is a wasteful number, since it uses less digits than its factorization.

83621208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4432 (or 4428 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 83621208 is about 9144.4632428590. The cubic root of 83621208 is about 437.2926176856.

The spelling of 83621208 in words is "eighty-three million, six hundred twenty-one thousand, two hundred eight".