662928281 has 2 divisors, whose sum is σ = 662928282. Its totient is φ = 662928280.

The previous prime is 662928271. The next prime is 662928317. The reversal of 662928281 is 182829266.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 381225625 + 281702656 = 19525^2 + 16784^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-662928281 is a prime.

It is a super-2 number, since 2×662928281² = 878947811499229922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (662928271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331464140 + 331464141.

It is an arithmetic number, because the mean of its divisors is an integer number (331464141).

Almost surely, 2^662928281 is an apocalyptic number.

It is an amenable number.

662928281 is a deficient number, since it is larger than the sum of its proper divisors (1).

662928281 is an equidigital number, since it uses as much as digits as its factorization.

662928281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 44.

The square root of 662928281 is about 25747.3936739236. The cubic root of 662928281 is about 871.9445126611.

The spelling of 662928281 in words is "six hundred sixty-two million, nine hundred twenty-eight thousand, two hundred eighty-one".