1687242703 has 2 divisors, whose sum is σ = 1687242704. Its totient is φ = 1687242702.

The previous prime is 1687242607. The next prime is 1687242749. The reversal of 1687242703 is 3072427861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1687242703 - 2⁹ = 1687242191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1687242203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 843621351 + 843621352.

It is an arithmetic number, because the mean of its divisors is an integer number (843621352).

Almost surely, 2^1687242703 is an apocalyptic number.

1687242703 is a deficient number, since it is larger than the sum of its proper divisors (1).

1687242703 is an equidigital number, since it uses as much as digits as its factorization.

1687242703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 1687242703 is about 41076.0599741504. The cubic root of 1687242703 is about 1190.4902772297.

The spelling of 1687242703 in words is "one billion, six hundred eighty-seven million, two hundred forty-two thousand, seven hundred three".