2887666690 has 8 divisors (see below), whose sum is σ = 5197800060. Its totient is φ = 1155066672.

The previous prime is 2887666687. The next prime is 2887666693. The reversal of 2887666690 is 966667882.

It is an interprime number because it is at equal distance from previous prime (2887666687) and next prime (2887666693).

It can be written as a sum of positive squares in 2 ways, for example, as 2887665169 + 1521 = 53737^2 + 39^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2887666690² = 16677237825071112200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2887666693) 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, 144383325 + ... + 144383344.

Almost surely, 2^2887666690 is an apocalyptic number.

2887666690 is a deficient number, since it is larger than the sum of its proper divisors (2310133370).

2887666690 is a wasteful number, since it uses less digits than its factorization.

2887666690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288766676.

The product of its (nonzero) digits is 10450944, while the sum is 58.

The square root of 2887666690 is about 53737.0141522582. The cubic root of 2887666690 is about 1424.0186845931.

The spelling of 2887666690 in words is "two billion, eight hundred eighty-seven million, six hundred sixty-six thousand, six hundred ninety".