83143668 has 24 divisors (see below), whose sum is σ = 205414272. Its totient is φ = 26084224.

The previous prime is 83143663. The next prime is 83143679. The reversal of 83143668 is 86634138.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83143661) 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, 203580 + ... + 203987.

It is an arithmetic number, because the mean of its divisors is an integer number (8558928).

Almost surely, 2^83143668 is an apocalyptic number.

It is an amenable number.

83143668 is an abundant number, since it is smaller than the sum of its proper divisors (122270604).

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

83143668 is a wasteful number, since it uses less digits than its factorization.

83143668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407591 (or 407589 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 83143668 is about 9118.3149759152. The cubic root of 83143668 is about 436.4586047877.

The spelling of 83143668 in words is "eighty-three million, one hundred forty-three thousand, six hundred sixty-eight".