82664385 has 8 divisors (see below), whose sum is σ = 132263040. Its totient is φ = 44087664.

The previous prime is 82664381. The next prime is 82664389. The reversal of 82664385 is 58346628.

It is an interprime number because it is at equal distance from previous prime (82664381) and next prime (82664389).

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

It is not a de Polignac number, because 82664385 - 2² = 82664381 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (82664381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2755465 + ... + 2755494.

It is an arithmetic number, because the mean of its divisors is an integer number (16532880).

Almost surely, 2^82664385 is an apocalyptic number.

It is an amenable number.

82664385 is a deficient number, since it is larger than the sum of its proper divisors (49598655).

82664385 is a wasteful number, since it uses less digits than its factorization.

82664385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5510967.

The product of its digits is 276480, while the sum is 42.

The square root of 82664385 is about 9091.9956555203. The cubic root of 82664385 is about 435.6183305930.

The spelling of 82664385 in words is "eighty-two million, six hundred sixty-four thousand, three hundred eighty-five".