82064945 has 4 divisors (see below), whose sum is σ = 98477940. Its totient is φ = 65651952.

The previous prime is 82064923. The next prime is 82064959. The reversal of 82064945 is 54946028.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46076944 + 35988001 = 6788^2 + 5999^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82064945 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 82064899 and 82064908.

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, 8206490 + ... + 8206499.

It is an arithmetic number, because the mean of its divisors is an integer number (24619485).

Almost surely, 2^82064945 is an apocalyptic number.

It is an amenable number.

82064945 is a deficient number, since it is larger than the sum of its proper divisors (16412995).

82064945 is a wasteful number, since it uses less digits than its factorization.

82064945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16412994.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 82064945 is about 9058.9704161124. The cubic root of 82064945 is about 434.5628143872.

The spelling of 82064945 in words is "eighty-two million, sixty-four thousand, nine hundred forty-five".