2076711661 has 4 divisors (see below), whose sum is σ = 2077018812. Its totient is φ = 2076404512.

The previous prime is 2076711599. The next prime is 2076711713. The reversal of 2076711661 is 1661176702.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1796149161 + 280562500 = 42381^2 + 16750^2 .

It is a cyclic number.

It is not a de Polignac number, because 2076711661 - 2²³ = 2068323053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2076711661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2076711061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143200 + ... + 157033.

It is an arithmetic number, because the mean of its divisors is an integer number (519254703).

Almost surely, 2^2076711661 is an apocalyptic number.

It is an amenable number.

2076711661 is a deficient number, since it is larger than the sum of its proper divisors (307151).

2076711661 is an equidigital number, since it uses as much as digits as its factorization.

2076711661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307150.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 2076711661 is about 45570.9519430964. The cubic root of 2076711661 is about 1275.8278178603.

The spelling of 2076711661 in words is "two billion, seventy-six million, seven hundred eleven thousand, six hundred sixty-one".