82020020687 has 8 divisors (see below), whose sum is σ = 89478577920. Its totient is φ = 74561828760.

The previous prime is 82020020651. The next prime is 82020020707. The reversal of 82020020687 is 78602002028.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82020020687 - 2¹² = 82020016591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82020020387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 617114 + ... + 738152.

It is an arithmetic number, because the mean of its divisors is an integer number (11184822240).

Almost surely, 2^82020020687 is an apocalyptic number.

82020020687 is a deficient number, since it is larger than the sum of its proper divisors (7458557233).

82020020687 is a wasteful number, since it uses less digits than its factorization.

82020020687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182653.

The product of its (nonzero) digits is 21504, while the sum is 35.

The spelling of 82020020687 in words is "eighty-two billion, twenty million, twenty thousand, six hundred eighty-seven".