82643345 has 8 divisors (see below), whose sum is σ = 99953664. Its totient is φ = 65593584.

The previous prime is 82643339. The next prime is 82643371. The reversal of 82643345 is 54334628.

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

It is a cyclic number.

It is not a de Polignac number, because 82643345 - 2⁴ = 82643329 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64439 + ... + 65708.

It is an arithmetic number, because the mean of its divisors is an integer number (12494208).

Almost surely, 2^82643345 is an apocalyptic number.

It is an amenable number.

82643345 is a deficient number, since it is larger than the sum of its proper divisors (17310319).

82643345 is a wasteful number, since it uses less digits than its factorization.

82643345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130279.

The product of its digits is 69120, while the sum is 35.

The square root of 82643345 is about 9090.8385201806. The cubic root of 82643345 is about 435.5813691398.

The spelling of 82643345 in words is "eighty-two million, six hundred forty-three thousand, three hundred forty-five".