2664888685 has 8 divisors (see below), whose sum is σ = 3275863416. Its totient is φ = 2079912960.

The previous prime is 2664888671. The next prime is 2664888689. The reversal of 2664888685 is 5868884662.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 352913796 + 2311974889 = 18786^2 + 48083^2 .

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

It is not a de Polignac number, because 2664888685 - 2¹⁵ = 2664855917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2664888689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6499524 + ... + 6499933.

It is an arithmetic number, because the mean of its divisors is an integer number (409482927).

Almost surely, 2^2664888685 is an apocalyptic number.

It is an amenable number.

2664888685 is a deficient number, since it is larger than the sum of its proper divisors (610974731).

2664888685 is a wasteful number, since it uses less digits than its factorization.

2664888685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12999503.

The product of its digits is 35389440, while the sum is 61.

The square root of 2664888685 is about 51622.5598454784. The cubic root of 2664888685 is about 1386.4142842715.

The spelling of 2664888685 in words is "two billion, six hundred sixty-four million, eight hundred eighty-eight thousand, six hundred eighty-five".