487198681 has 2 divisors, whose sum is σ = 487198682. Its totient is φ = 487198680.

The previous prime is 487198661. The next prime is 487198693. The reversal of 487198681 is 186891784.

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., 306565081 + 180633600 = 17509^2 + 13440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-487198681 is a prime.

It is a super-2 number, since 2×487198681² = 474725109536279522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (487198601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243599340 + 243599341.

It is an arithmetic number, because the mean of its divisors is an integer number (243599341).

Almost surely, 2^487198681 is an apocalyptic number.

It is an amenable number.

487198681 is a deficient number, since it is larger than the sum of its proper divisors (1).

487198681 is an equidigital number, since it uses as much as digits as its factorization.

487198681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 774144, while the sum is 52.

The square root of 487198681 is about 22072.5775794310. The cubic root of 487198681 is about 786.8682729435.

The spelling of 487198681 in words is "four hundred eighty-seven million, one hundred ninety-eight thousand, six hundred eighty-one".