82620887 has 2 divisors, whose sum is σ = 82620888. Its totient is φ = 82620886.

The previous prime is 82620883. The next prime is 82620893. The reversal of 82620887 is 78802628.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82620887 - 2² = 82620883 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82620883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41310443 + 41310444.

It is an arithmetic number, because the mean of its divisors is an integer number (41310444).

Almost surely, 2^82620887 is an apocalyptic number.

82620887 is a deficient number, since it is larger than the sum of its proper divisors (1).

82620887 is an equidigital number, since it uses as much as digits as its factorization.

82620887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 82620887 is about 9089.6032366655. The cubic root of 82620887 is about 435.5419097310.

The spelling of 82620887 in words is "eighty-two million, six hundred twenty thousand, eight hundred eighty-seven".