628819066 has 16 divisors (see below), whose sum is σ = 976301568. Its totient is φ = 303440400.

The previous prime is 628819043. The next prime is 628819111. The reversal of 628819066 is 660918826.

628819066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×628819066² = 790826835530224712, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9531 + ... + 36721.

It is an arithmetic number, because the mean of its divisors is an integer number (61018848).

Almost surely, 2^628819066 is an apocalyptic number.

628819066 is a deficient number, since it is larger than the sum of its proper divisors (347482502).

628819066 is a wasteful number, since it uses less digits than its factorization.

628819066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27597.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 628819066 is about 25076.2649930168. The cubic root of 628819066 is about 856.7259078440.

The spelling of 628819066 in words is "six hundred twenty-eight million, eight hundred nineteen thousand, sixty-six".