2662070665 has 4 divisors (see below), whose sum is σ = 3194484804. Its totient is φ = 2129656528.

The previous prime is 2662070659. The next prime is 2662070687. The reversal of 2662070665 is 5660702662.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5660702662 = 2 ⋅2830351331.

It can be written as a sum of positive squares in 2 ways, for example, as 2022840576 + 639230089 = 44976^2 + 25283^2 .

It is a cyclic number.

It is not a de Polignac number, because 2662070665 - 2¹⁵ = 2662037897 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266207062 + ... + 266207071.

It is an arithmetic number, because the mean of its divisors is an integer number (798621201).

Almost surely, 2^2662070665 is an apocalyptic number.

It is an amenable number.

2662070665 is a deficient number, since it is larger than the sum of its proper divisors (532414139).

2662070665 is an equidigital number, since it uses as much as digits as its factorization.

2662070665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532414138.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 2662070665 is about 51595.2581639049. The cubic root of 2662070665 is about 1385.9254181809.

The spelling of 2662070665 in words is "two billion, six hundred sixty-two million, seventy thousand, six hundred sixty-five".