82405966 has 8 divisors (see below), whose sum is σ = 123649344. Its totient is φ = 41189520.

The previous prime is 82405963. The next prime is 82405979. The reversal of 82405966 is 66950428.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82405963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5026 + ... + 13786.

It is an arithmetic number, because the mean of its divisors is an integer number (15456168).

Almost surely, 2^82405966 is an apocalyptic number.

82405966 is a deficient number, since it is larger than the sum of its proper divisors (41243378).

82405966 is a wasteful number, since it uses less digits than its factorization.

82405966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13466.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 82405966 is about 9077.7731850934. The cubic root of 82405966 is about 435.1639246551.

The spelling of 82405966 in words is "eighty-two million, four hundred five thousand, nine hundred sixty-six".