628403789687 has 2 divisors, whose sum is σ = 628403789688. Its totient is φ = 628403789686.

The previous prime is 628403789669. The next prime is 628403789791. The reversal of 628403789687 is 786987304826.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 628403789687 - 2¹² = 628403785591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628403089687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314201894843 + 314201894844.

It is an arithmetic number, because the mean of its divisors is an integer number (314201894844).

Almost surely, 2^628403789687 is an apocalyptic number.

628403789687 is a deficient number, since it is larger than the sum of its proper divisors (1).

628403789687 is an equidigital number, since it uses as much as digits as its factorization.

628403789687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 195084288, while the sum is 68.

The spelling of 628403789687 in words is "six hundred twenty-eight billion, four hundred three million, seven hundred eighty-nine thousand, six hundred eighty-seven".