82216670 has 8 divisors (see below), whose sum is σ = 147990024. Its totient is φ = 32886664.

The previous prime is 82216657. The next prime is 82216691. The reversal of 82216670 is 7661228.

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

It is a Curzon number.

It is a congruent 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, 4110824 + ... + 4110843.

It is an arithmetic number, because the mean of its divisors is an integer number (18498753).

Almost surely, 2^82216670 is an apocalyptic number.

82216670 is a deficient number, since it is larger than the sum of its proper divisors (65773354).

82216670 is a wasteful number, since it uses less digits than its factorization.

82216670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8221674.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 82216670 is about 9067.3408450328. The cubic root of 82216670 is about 434.8304619634.

Adding to 82216670 its reverse (7661228), we get a palindrome (89877898).

The spelling of 82216670 in words is "eighty-two million, two hundred sixteen thousand, six hundred seventy".