2687028805 has 16 divisors (see below), whose sum is σ = 3249097200. Its totient is φ = 2133245952.

The previous prime is 2687028793. The next prime is 2687028847. The reversal of 2687028805 is 5088207862.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 183927844 + 2503100961 = 13562^2 + 50031^2 .

It is a cyclic number.

It is not a de Polignac number, because 2687028805 - 2²⁷ = 2552811077 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352171 + ... + 359719.

It is an arithmetic number, because the mean of its divisors is an integer number (203068575).

Almost surely, 2^2687028805 is an apocalyptic number.

It is an amenable number.

2687028805 is a deficient number, since it is larger than the sum of its proper divisors (562068395).

2687028805 is a wasteful number, since it uses less digits than its factorization.

2687028805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8088.

The product of its (nonzero) digits is 430080, while the sum is 46.

The square root of 2687028805 is about 51836.5585759703. The cubic root of 2687028805 is about 1390.2431824408.

The spelling of 2687028805 in words is "two billion, six hundred eighty-seven million, twenty-eight thousand, eight hundred five".