673860487 has 2 divisors, whose sum is σ = 673860488. Its totient is φ = 673860486.

The previous prime is 673860457. The next prime is 673860491. The reversal of 673860487 is 784068376.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-673860487 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 673860487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673860437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336930243 + 336930244.

It is an arithmetic number, because the mean of its divisors is an integer number (336930244).

Almost surely, 2^673860487 is an apocalyptic number.

673860487 is a deficient number, since it is larger than the sum of its proper divisors (1).

673860487 is an equidigital number, since it uses as much as digits as its factorization.

673860487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1354752, while the sum is 49.

The square root of 673860487 is about 25958.8229124512. The cubic root of 673860487 is about 876.7114202858.

The spelling of 673860487 in words is "six hundred seventy-three million, eight hundred sixty thousand, four hundred eighty-seven".