628374863 has 4 divisors (see below), whose sum is σ = 634139880. Its totient is φ = 622609848.

The previous prime is 628374793. The next prime is 628374883. The reversal of 628374863 is 368473826.

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 628374863 - 2²⁴ = 611597647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628374883) 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, 2882345 + ... + 2882562.

It is an arithmetic number, because the mean of its divisors is an integer number (158534970).

Almost surely, 2^628374863 is an apocalyptic number.

628374863 is a deficient number, since it is larger than the sum of its proper divisors (5765017).

628374863 is a wasteful number, since it uses less digits than its factorization.

628374863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5765016.

The product of its digits is 1161216, while the sum is 47.

The square root of 628374863 is about 25067.4063875783. The cubic root of 628374863 is about 856.5241275628.

The spelling of 628374863 in words is "six hundred twenty-eight million, three hundred seventy-four thousand, eight hundred sixty-three".