82768945 has 16 divisors (see below), whose sum is σ = 113685120. Its totient is φ = 56669184.

The previous prime is 82768897. The next prime is 82768949. The reversal of 82768945 is 54986728.

It is a cyclic number.

It is not a de Polignac number, because 82768945 - 2²¹ = 80671793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82768949) 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, 28689 + ... + 31441.

It is an arithmetic number, because the mean of its divisors is an integer number (7105320).

Almost surely, 2^82768945 is an apocalyptic number.

It is an amenable number.

82768945 is a deficient number, since it is larger than the sum of its proper divisors (30916175).

82768945 is a wasteful number, since it uses less digits than its factorization.

82768945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3624.

The product of its digits is 967680, while the sum is 49.

The square root of 82768945 is about 9097.7439511123. The cubic root of 82768945 is about 435.8019205871.

The spelling of 82768945 in words is "eighty-two million, seven hundred sixty-eight thousand, nine hundred forty-five".