82013887 has 2 divisors, whose sum is σ = 82013888. Its totient is φ = 82013886.

The previous prime is 82013849. The next prime is 82013917. The reversal of 82013887 is 78831028.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 82013887 - 2⁷ = 82013759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82013807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41006943 + 41006944.

It is an arithmetic number, because the mean of its divisors is an integer number (41006944).

Almost surely, 2^82013887 is an apocalyptic number.

82013887 is a deficient number, since it is larger than the sum of its proper divisors (1).

82013887 is an equidigital number, since it uses as much as digits as its factorization.

82013887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 82013887 is about 9056.1518869772. The cubic root of 82013887 is about 434.4726723203.

The spelling of 82013887 in words is "eighty-two million, thirteen thousand, eight hundred eighty-seven".