197862487 has 2 divisors, whose sum is σ = 197862488. Its totient is φ = 197862486.

The previous prime is 197862463. The next prime is 197862499. The reversal of 197862487 is 784268791.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 197862487 - 2²⁷ = 63644759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197862407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98931243 + 98931244.

It is an arithmetic number, because the mean of its divisors is an integer number (98931244).

Almost surely, 2^197862487 is an apocalyptic number.

197862487 is a deficient number, since it is larger than the sum of its proper divisors (1).

197862487 is an equidigital number, since it uses as much as digits as its factorization.

197862487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 52.

The square root of 197862487 is about 14066.3601190926. The cubic root of 197862487 is about 582.7127058784.

The spelling of 197862487 in words is "one hundred ninety-seven million, eight hundred sixty-two thousand, four hundred eighty-seven".