83215966 has 32 divisors (see below), whose sum is σ = 132507648. Its totient is φ = 39143520.

The previous prime is 83215963. The next prime is 83215973. The reversal of 83215966 is 66951238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83215961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 529960 + ... + 530116.

It is an arithmetic number, because the mean of its divisors is an integer number (4140864).

Almost surely, 2^83215966 is an apocalyptic number.

83215966 is a deficient number, since it is larger than the sum of its proper divisors (49291682).

83215966 is a wasteful number, since it uses less digits than its factorization.

83215966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376.

The product of its digits is 77760, while the sum is 40.

The square root of 83215966 is about 9122.2785530809. The cubic root of 83215966 is about 436.5850764044.

The spelling of 83215966 in words is "eighty-three million, two hundred fifteen thousand, nine hundred sixty-six".