82445564 has 6 divisors (see below), whose sum is σ = 144279744. Its totient is φ = 41222780.

The previous prime is 82445551. The next prime is 82445569. The reversal of 82445564 is 46554428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82445569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10305692 + ... + 10305699.

It is an arithmetic number, because the mean of its divisors is an integer number (24046624).

Almost surely, 2^82445564 is an apocalyptic number.

It is an amenable number.

82445564 is a deficient number, since it is larger than the sum of its proper divisors (61834180).

82445564 is a wasteful number, since it uses less digits than its factorization.

82445564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20611395 (or 20611393 counting only the distinct ones).

The product of its digits is 153600, while the sum is 38.

The square root of 82445564 is about 9079.9539646410. The cubic root of 82445564 is about 435.2336156519.

The spelling of 82445564 in words is "eighty-two million, four hundred forty-five thousand, five hundred sixty-four".