497747681 has 2 divisors, whose sum is σ = 497747682. Its totient is φ = 497747680.

The previous prime is 497747651. The next prime is 497747707. The reversal of 497747681 is 186747794.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 390418081 + 107329600 = 19759^2 + 10360^2 .

It is a cyclic number.

It is not a de Polignac number, because 497747681 - 2¹⁸ = 497485537 is a prime.

It is a super-2 number, since 2×497747681² = 495505507881755522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (497747611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248873840 + 248873841.

It is an arithmetic number, because the mean of its divisors is an integer number (248873841).

Almost surely, 2^497747681 is an apocalyptic number.

It is an amenable number.

497747681 is a deficient number, since it is larger than the sum of its proper divisors (1).

497747681 is an equidigital number, since it uses as much as digits as its factorization.

497747681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2370816, while the sum is 53.

The square root of 497747681 is about 22310.2595457785. The cubic root of 497747681 is about 792.5069541330.

The spelling of 497747681 in words is "four hundred ninety-seven million, seven hundred forty-seven thousand, six hundred eighty-one".