2668702447 has 4 divisors (see below), whose sum is σ = 2669222920. Its totient is φ = 2668181976.

The previous prime is 2668702433. The next prime is 2668702451. The reversal of 2668702447 is 7442078662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7442078662 = 2 ⋅3721039331.

It is a cyclic number.

It is not a de Polignac number, because 2668702447 - 2⁷ = 2668702319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2668702397 and 2668702406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2668702417) 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, 252468 + ... + 262825.

It is an arithmetic number, because the mean of its divisors is an integer number (667305730).

Almost surely, 2^2668702447 is an apocalyptic number.

2668702447 is a deficient number, since it is larger than the sum of its proper divisors (520473).

2668702447 is an equidigital number, since it uses as much as digits as its factorization.

2668702447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520472.

The product of its (nonzero) digits is 903168, while the sum is 46.

The square root of 2668702447 is about 51659.4855471868. The cubic root of 2668702447 is about 1387.0753417519.

The spelling of 2668702447 in words is "two billion, six hundred sixty-eight million, seven hundred two thousand, four hundred forty-seven".