83145566 has 12 divisors (see below), whose sum is σ = 142593768. Its totient is φ = 35619192.

The previous prime is 83145563. The next prime is 83145571. The reversal of 83145566 is 66554138.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83145563) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32900 + ... + 35336.

It is an arithmetic number, because the mean of its divisors is an integer number (11882814).

Almost surely, 2^83145566 is an apocalyptic number.

83145566 is a deficient number, since it is larger than the sum of its proper divisors (59448202).

83145566 is an frugal number, since it uses more digits than its factorization.

83145566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4883 (or 2446 counting only the distinct ones).

The product of its digits is 86400, while the sum is 38.

The square root of 83145566 is about 9118.4190515681. The cubic root of 83145566 is about 436.4619259150.

The spelling of 83145566 in words is "eighty-three million, one hundred forty-five thousand, five hundred sixty-six".