82620845 has 16 divisors (see below), whose sum is σ = 101779392. Its totient is φ = 64350720.

The previous prime is 82620823. The next prime is 82620847. The reversal of 82620845 is 54802628.

It is not a de Polignac number, because 82620845 - 2⁸ = 82620589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82620847) 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, 122429 + ... + 123101.

It is an arithmetic number, because the mean of its divisors is an integer number (6361212).

Almost surely, 2^82620845 is an apocalyptic number.

It is an amenable number.

82620845 is a deficient number, since it is larger than the sum of its proper divisors (19158547).

82620845 is a wasteful number, since it uses less digits than its factorization.

82620845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292.

The product of its (nonzero) digits is 30720, while the sum is 35.

The square root of 82620845 is about 9089.6009263333. The cubic root of 82620845 is about 435.5418359290.

The spelling of 82620845 in words is "eighty-two million, six hundred twenty thousand, eight hundred forty-five".