82687903 has 16 divisors (see below), whose sum is σ = 87645600. Its totient is φ = 77898240.

The previous prime is 82687889. The next prime is 82687907. The reversal of 82687903 is 30978628.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82687903 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82687903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82687907) 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 15 ways as a sum of consecutive naturals, for example, 294123 + ... + 294403.

It is an arithmetic number, because the mean of its divisors is an integer number (5477850).

Almost surely, 2^82687903 is an apocalyptic number.

82687903 is a deficient number, since it is larger than the sum of its proper divisors (4957697).

82687903 is a wasteful number, since it uses less digits than its factorization.

82687903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 82687903 is about 9093.2888989628. The cubic root of 82687903 is about 435.6596377835.

The spelling of 82687903 in words is "eighty-two million, six hundred eighty-seven thousand, nine hundred three".