82620787 has 2 divisors, whose sum is σ = 82620788. Its totient is φ = 82620786.

The previous prime is 82620767. The next prime is 82620809. The reversal of 82620787 is 78702628.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82620787 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (82620767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41310393 + 41310394.

It is an arithmetic number, because the mean of its divisors is an integer number (41310394).

Almost surely, 2^82620787 is an apocalyptic number.

82620787 is a deficient number, since it is larger than the sum of its proper divisors (1).

82620787 is an equidigital number, since it uses as much as digits as its factorization.

82620787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 82620787 is about 9089.5977358737. The cubic root of 82620787 is about 435.5417340118.

The spelling of 82620787 in words is "eighty-two million, six hundred twenty thousand, seven hundred eighty-seven".