662946303881 has 2 divisors, whose sum is σ = 662946303882. Its totient is φ = 662946303880.

The previous prime is 662946303863. The next prime is 662946303893. The reversal of 662946303881 is 188303649266.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 647831814400 + 15114489481 = 804880^2 + 122941^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-662946303881 is a prime.

It is a super-2 number, since 2×662946303881² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (662946306881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331473151940 + 331473151941.

It is an arithmetic number, because the mean of its divisors is an integer number (331473151941).

Almost surely, 2^662946303881 is an apocalyptic number.

It is an amenable number.

662946303881 is a deficient number, since it is larger than the sum of its proper divisors (1).

662946303881 is an equidigital number, since it uses as much as digits as its factorization.

662946303881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8957952, while the sum is 56.

The spelling of 662946303881 in words is "six hundred sixty-two billion, nine hundred forty-six million, three hundred three thousand, eight hundred eighty-one".