83993646 has 16 divisors (see below), whose sum is σ = 183259008. Its totient is φ = 25452600.

The previous prime is 83993641. The next prime is 83993647. The reversal of 83993646 is 64639938.

It is a junction number, because it is equal to n+sod(n) for n = 83993595 and 83993604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83993641) 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, 636250 + ... + 636381.

It is an arithmetic number, because the mean of its divisors is an integer number (11453688).

Almost surely, 2^83993646 is an apocalyptic number.

83993646 is an abundant number, since it is smaller than the sum of its proper divisors (99265362).

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

83993646 is a wasteful number, since it uses less digits than its factorization.

83993646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1272647.

The product of its digits is 839808, while the sum is 48.

The square root of 83993646 is about 9164.8047442376. The cubic root of 83993646 is about 437.9408710657.

The spelling of 83993646 in words is "eighty-three million, nine hundred ninety-three thousand, six hundred forty-six".