82945905 has 16 divisors (see below), whose sum is σ = 151672704. Its totient is φ = 37918080.

The previous prime is 82945883. The next prime is 82945921. The reversal of 82945905 is 50954928.

It is not a de Polignac number, because 82945905 - 2⁷ = 82945777 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394876 + ... + 395085.

It is an arithmetic number, because the mean of its divisors is an integer number (9479544).

Almost surely, 2^82945905 is an apocalyptic number.

It is an amenable number.

82945905 is a deficient number, since it is larger than the sum of its proper divisors (68726799).

82945905 is a wasteful number, since it uses less digits than its factorization.

82945905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789976.

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 82945905 is about 9107.4642464300. The cubic root of 82945905 is about 436.1122810029.

The spelling of 82945905 in words is "eighty-two million, nine hundred forty-five thousand, nine hundred five".