83668420 has 24 divisors (see below), whose sum is σ = 191677248. Its totient is φ = 30424800.

The previous prime is 83668363. The next prime is 83668421. The reversal of 83668420 is 2486638.

It is a self number, because there is not a number n which added to its sum of digits gives 83668420.

It is not an unprimeable number, because it can be changed into a prime (83668421) 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, 189936 + ... + 190375.

It is an arithmetic number, because the mean of its divisors is an integer number (7986552).

Almost surely, 2^83668420 is an apocalyptic number.

It is an amenable number.

83668420 is an abundant number, since it is smaller than the sum of its proper divisors (108008828).

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

83668420 is a wasteful number, since it uses less digits than its factorization.

83668420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380331 (or 380329 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 83668420 is about 9147.0443313674. The cubic root of 83668420 is about 437.3748997420.

The spelling of 83668420 in words is "eighty-three million, six hundred sixty-eight thousand, four hundred twenty".