2087210691 has 6 divisors (see below), whose sum is σ = 3014859900. Its totient is φ = 1391473788.

The previous prime is 2087210689. The next prime is 2087210701. The reversal of 2087210691 is 1960127802.

It is not a de Polignac number, because 2087210691 - 2¹ = 2087210689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2087210621) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 115956141 + ... + 115956158.

It is an arithmetic number, because the mean of its divisors is an integer number (502476650).

Almost surely, 2^2087210691 is an apocalyptic number.

2087210691 is a deficient number, since it is larger than the sum of its proper divisors (927649209).

2087210691 is a wasteful number, since it uses less digits than its factorization.

2087210691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231912305 (or 231912302 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 2087210691 is about 45686.0010397058. The cubic root of 2087210691 is about 1277.9742311511.

The spelling of 2087210691 in words is "two billion, eighty-seven million, two hundred ten thousand, six hundred ninety-one".