2668702281 has 8 divisors (see below), whose sum is σ = 4066593984. Its totient is φ = 1524972720.

The previous prime is 2668702273. The next prime is 2668702319. The reversal of 2668702281 is 1822078662.

It is a happy number.

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

It is not a de Polignac number, because 2668702281 - 2³ = 2668702273 is a prime.

It is a super-2 number, since 2×2668702281² = 14243943729229205922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2668702261) 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, 63540510 + ... + 63540551.

It is an arithmetic number, because the mean of its divisors is an integer number (508324248).

Almost surely, 2^2668702281 is an apocalyptic number.

2668702281 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2668702281 is a deficient number, since it is larger than the sum of its proper divisors (1397891703).

2668702281 is a wasteful number, since it uses less digits than its factorization.

2668702281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127081071.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 2668702281 is about 51659.4839405118. The cubic root of 2668702281 is about 1387.0753129920.

The spelling of 2668702281 in words is "two billion, six hundred sixty-eight million, seven hundred two thousand, two hundred eighty-one".