628868699 has 2 divisors, whose sum is σ = 628868700. Its totient is φ = 628868698.

The previous prime is 628868693. The next prime is 628868711. The reversal of 628868699 is 996868826.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 628868699 - 2²⁴ = 612091483 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (628868693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314434349 + 314434350.

It is an arithmetic number, because the mean of its divisors is an integer number (314434350).

Almost surely, 2^628868699 is an apocalyptic number.

628868699 is a deficient number, since it is larger than the sum of its proper divisors (1).

628868699 is an equidigital number, since it uses as much as digits as its factorization.

628868699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17915904, while the sum is 62.

The square root of 628868699 is about 25077.2546144908. The cubic root of 628868699 is about 856.7484478509.

The spelling of 628868699 in words is "six hundred twenty-eight million, eight hundred sixty-eight thousand, six hundred ninety-nine".