6813428587 has 12 divisors (see below), whose sum is σ = 7928928000. Its totient is φ = 5837795376.

The previous prime is 6813428581. The next prime is 6813428597. The reversal of 6813428587 is 7858243186.

It is not a de Polignac number, because 6813428587 - 2³ = 6813428579 is a prime.

It is a super-2 number, since 2×6813428587² = 92845618220297633138, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6813428581) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105789 + ... + 157537.

It is an arithmetic number, because the mean of its divisors is an integer number (660744000).

Almost surely, 2^6813428587 is an apocalyptic number.

6813428587 is a deficient number, since it is larger than the sum of its proper divisors (1115499413).

6813428587 is a wasteful number, since it uses less digits than its factorization.

6813428587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54450 (or 54443 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 52.

The square root of 6813428587 is about 82543.4951222687. The cubic root of 6813428587 is about 1895.7827596345.

It can be divided in two parts, 68134 and 28587, that added together give a square (96721 = 311²).

The spelling of 6813428587 in words is "six billion, eight hundred thirteen million, four hundred twenty-eight thousand, five hundred eighty-seven".