628445499 has 16 divisors (see below), whose sum is σ = 936399744. Its totient is φ = 371585600.

The previous prime is 628445497. The next prime is 628445513. The reversal of 628445499 is 994544826.

It is a cyclic number.

It is not a de Polignac number, because 628445499 - 2¹ = 628445497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (628445497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230889 + ... + 233594.

It is an arithmetic number, because the mean of its divisors is an integer number (58524984).

Almost surely, 2^628445499 is an apocalyptic number.

628445499 is a deficient number, since it is larger than the sum of its proper divisors (307954245).

628445499 is a wasteful number, since it uses less digits than its factorization.

628445499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464538.

The product of its digits is 2488320, while the sum is 51.

The square root of 628445499 is about 25068.8152691746. The cubic root of 628445499 is about 856.5562204927.

The spelling of 628445499 in words is "six hundred twenty-eight million, four hundred forty-five thousand, four hundred ninety-nine".