628385267 has 4 divisors (see below), whose sum is σ = 630070320. Its totient is φ = 626700216.

The previous prime is 628385257. The next prime is 628385269. The reversal of 628385267 is 762583826.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 628385267 - 2⁸ = 628385011 is a prime.

It is a super-2 number, since 2×628385267² = 789736087565322578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628385269) 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 3 ways as a sum of consecutive naturals, for example, 841967 + ... + 842712.

It is an arithmetic number, because the mean of its divisors is an integer number (157517580).

Almost surely, 2^628385267 is an apocalyptic number.

628385267 is a deficient number, since it is larger than the sum of its proper divisors (1685053).

628385267 is a wasteful number, since it uses less digits than its factorization.

628385267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1685052.

The product of its digits is 967680, while the sum is 47.

The square root of 628385267 is about 25067.6139071911. The cubic root of 628385267 is about 856.5288546922.

The spelling of 628385267 in words is "six hundred twenty-eight million, three hundred eighty-five thousand, two hundred sixty-seven".