82820495 has 4 divisors (see below), whose sum is σ = 99384600. Its totient is φ = 66256392.

The previous prime is 82820453. The next prime is 82820497. The reversal of 82820495 is 59402828.

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

It is a cyclic number.

It is not a de Polignac number, because 82820495 - 2⁸ = 82820239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82820497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8282045 + ... + 8282054.

It is an arithmetic number, because the mean of its divisors is an integer number (24846150).

Almost surely, 2^82820495 is an apocalyptic number.

82820495 is a deficient number, since it is larger than the sum of its proper divisors (16564105).

82820495 is a wasteful number, since it uses less digits than its factorization.

82820495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16564104.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 82820495 is about 9100.5766300823. The cubic root of 82820495 is about 435.8923769237.

The spelling of 82820495 in words is "eighty-two million, eight hundred twenty thousand, four hundred ninety-five".