628322823 has 12 divisors (see below), whose sum is σ = 917776080. Its totient is φ = 414174816.

The previous prime is 628322749. The next prime is 628322867. The reversal of 628322823 is 328223826.

628322823 is a `hidden beast` number, since 628 + 3 + 2 + 2 + 8 + 23 = 666.

628322823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 628322823 - 2⁹ = 628322311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628322623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 391411 + ... + 393012.

It is an arithmetic number, because the mean of its divisors is an integer number (76481340).

Almost surely, 2^628322823 is an apocalyptic number.

628322823 is a deficient number, since it is larger than the sum of its proper divisors (289453257).

628322823 is a wasteful number, since it uses less digits than its factorization.

628322823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784518 (or 784515 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 628322823 is about 25066.3683648031. The cubic root of 628322823 is about 856.5004820454.

The spelling of 628322823 in words is "six hundred twenty-eight million, three hundred twenty-two thousand, eight hundred twenty-three".