628347699 has 56 divisors (see below), whose sum is σ = 1095448320. Its totient is φ = 352801008.

The previous prime is 628347697. The next prime is 628347739. The reversal of 628347699 is 996743826.

It is a happy number.

628347699 is a `hidden beast` number, since 6 + 2 + 83 + 476 + 99 = 666.

It is not a de Polignac number, because 628347699 - 2¹ = 628347697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (628347697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 300034 + ... + 302120.

Almost surely, 2^628347699 is an apocalyptic number.

628347699 is a deficient number, since it is larger than the sum of its proper divisors (467100621).

628347699 is an equidigital number, since it uses as much as digits as its factorization.

628347699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2171 (or 2156 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The square root of 628347699 is about 25066.8645626054. The cubic root of 628347699 is about 856.5117851655.

The spelling of 628347699 in words is "six hundred twenty-eight million, three hundred forty-seven thousand, six hundred ninety-nine".