2666479385 has 8 divisors (see below), whose sum is σ = 3310112520. Its totient is φ = 2059625344.

The previous prime is 2666479369. The next prime is 2666479391. The reversal of 2666479385 is 5839746662.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 148547344 + 2517932041 = 12188^2 + 50179^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2666479385 - 2⁴ = 2666479369 is a prime.

It is a super-2 number, since 2×2666479385² = 14220224621259956450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2666479385.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9194612 + ... + 9194901.

It is an arithmetic number, because the mean of its divisors is an integer number (413764065).

Almost surely, 2^2666479385 is an apocalyptic number.

It is an amenable number.

2666479385 is a deficient number, since it is larger than the sum of its proper divisors (643633135).

2666479385 is a wasteful number, since it uses less digits than its factorization.

2666479385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18389547.

The product of its digits is 13063680, while the sum is 56.

The square root of 2666479385 is about 51637.9645706529. The cubic root of 2666479385 is about 1386.6900844775.

The spelling of 2666479385 in words is "two billion, six hundred sixty-six million, four hundred seventy-nine thousand, three hundred eighty-five".