487691513 has 2 divisors, whose sum is σ = 487691514. Its totient is φ = 487691512.

The previous prime is 487691447. The next prime is 487691527. The reversal of 487691513 is 315196784.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 447407104 + 40284409 = 21152^2 + 6347^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-487691513 is a prime.

It is not a weakly prime, because it can be changed into another prime (487693513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243845756 + 243845757.

It is an arithmetic number, because the mean of its divisors is an integer number (243845757).

Almost surely, 2^487691513 is an apocalyptic number.

It is an amenable number.

487691513 is a deficient number, since it is larger than the sum of its proper divisors (1).

487691513 is an equidigital number, since it uses as much as digits as its factorization.

487691513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 44.

The square root of 487691513 is about 22083.7386553998. The cubic root of 487691513 is about 787.1335057215.

The spelling of 487691513 in words is "four hundred eighty-seven million, six hundred ninety-one thousand, five hundred thirteen".