2070867861 has 12 divisors (see below), whose sum is σ = 2993965260. Its totient is φ = 1379327040.

The previous prime is 2070867847. The next prime is 2070867881. The reversal of 2070867861 is 1687680702.

It can be written as a sum of positive squares in 2 ways, for example, as 159516900 + 1911350961 = 12630^2 + 43719^2 .

It is not a de Polignac number, because 2070867861 - 2¹⁹ = 2070343573 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2070867881) 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, 93760 + ... + 113721.

It is an arithmetic number, because the mean of its divisors is an integer number (249497105).

Almost surely, 2^2070867861 is an apocalyptic number.

It is an amenable number.

2070867861 is a deficient number, since it is larger than the sum of its proper divisors (923097399).

2070867861 is a wasteful number, since it uses less digits than its factorization.

2070867861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208596 (or 208593 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 2070867861 is about 45506.7891748034. The cubic root of 2070867861 is about 1274.6299807466.

The spelling of 2070867861 in words is "two billion, seventy million, eight hundred sixty-seven thousand, eight hundred sixty-one".