2087557806 has 32 divisors (see below), whose sum is σ = 4424342688. Its totient is φ = 654382080.

The previous prime is 2087557757. The next prime is 2087557807. The reversal of 2087557806 is 6087557802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2087557807) 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, 126996 + ... + 142488.

It is an arithmetic number, because the mean of its divisors is an integer number (138260709).

Almost surely, 2^2087557806 is an apocalyptic number.

2087557806 is an abundant number, since it is smaller than the sum of its proper divisors (2336784882).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2087557806 is a wasteful number, since it uses less digits than its factorization.

2087557806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16836.

The product of its (nonzero) digits is 940800, while the sum is 48.

The square root of 2087557806 is about 45689.7998025818. The cubic root of 2087557806 is about 1278.0450720167.

The spelling of 2087557806 in words is "two billion, eighty-seven million, five hundred fifty-seven thousand, eight hundred six".