83220666 has 8 divisors (see below), whose sum is σ = 166441344. Its totient is φ = 27740220.

The previous prime is 83220649. The next prime is 83220713. The reversal of 83220666 is 66602238.

It is a sphenic number, since it is the product of 3 distinct primes.

83220666 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6935050 + ... + 6935061.

It is an arithmetic number, because the mean of its divisors is an integer number (20805168).

Almost surely, 2^83220666 is an apocalyptic number.

83220666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

83220666 is a wasteful number, since it uses less digits than its factorization.

83220666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13870116.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 83220666 is about 9122.5361605203. The cubic root of 83220666 is about 436.5932956253.

The spelling of 83220666 in words is "eighty-three million, two hundred twenty thousand, six hundred sixty-six".