6662881 has 2 divisors, whose sum is σ = 6662882. Its totient is φ = 6662880.

The previous prime is 6662879. The next prime is 6662891. The reversal of 6662881 is 1882666.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6350400 + 312481 = 2520^2 + 559^2 .

It is a cyclic number.

It is not a de Polignac number, because 6662881 - 2¹ = 6662879 is a prime.

It is a super-2 number, since 2×6662881² = 88787966440322, which contains 22 as substring.

Together with 6662879, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6662881.

It is not a weakly prime, because it can be changed into another prime (6662891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3331440 + 3331441.

It is an arithmetic number, because the mean of its divisors is an integer number (3331441).

Almost surely, 2^6662881 is an apocalyptic number.

It is an amenable number.

6662881 is a deficient number, since it is larger than the sum of its proper divisors (1).

6662881 is an equidigital number, since it uses as much as digits as its factorization.

6662881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 37.

The square root of 6662881 is about 2581.2557021729. The cubic root of 6662881 is about 188.1715745437.

The spelling of 6662881 in words is "six million, six hundred sixty-two thousand, eight hundred eighty-one".