647004487 has 2 divisors, whose sum is σ = 647004488. Its totient is φ = 647004486.

The previous prime is 647004481. The next prime is 647004499. The reversal of 647004487 is 784400746.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 647004487 - 2¹⁵ = 646971719 is a prime.

It is a super-2 number, since 2×647004487² = 837229612396266338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (647004481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323502243 + 323502244.

It is an arithmetic number, because the mean of its divisors is an integer number (323502244).

Almost surely, 2^647004487 is an apocalyptic number.

647004487 is a deficient number, since it is larger than the sum of its proper divisors (1).

647004487 is an equidigital number, since it uses as much as digits as its factorization.

647004487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 150528, while the sum is 40.

The square root of 647004487 is about 25436.2828848871. The cubic root of 647004487 is about 864.9063736413.

The spelling of 647004487 in words is "six hundred forty-seven million, four thousand, four hundred eighty-seven".