82820611 has 2 divisors, whose sum is σ = 82820612. Its totient is φ = 82820610.

The previous prime is 82820603. The next prime is 82820629. The reversal of 82820611 is 11602828.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82820611 - 2³ = 82820603 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82820611.

It is not a weakly prime, because it can be changed into another prime (82820671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41410305 + 41410306.

It is an arithmetic number, because the mean of its divisors is an integer number (41410306).

Almost surely, 2^82820611 is an apocalyptic number.

82820611 is a deficient number, since it is larger than the sum of its proper divisors (1).

82820611 is an equidigital number, since it uses as much as digits as its factorization.

82820611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 82820611 is about 9100.5830033026. The cubic root of 82820611 is about 435.8925804300.

The spelling of 82820611 in words is "eighty-two million, eight hundred twenty thousand, six hundred eleven".