628363873 has 4 divisors (see below), whose sum is σ = 628543408. Its totient is φ = 628184340.

The previous prime is 628363847. The next prime is 628363889. The reversal of 628363873 is 378363826.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 628363873 - 2²¹ = 626266721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628363823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84411 + ... + 91552.

It is an arithmetic number, because the mean of its divisors is an integer number (157135852).

Almost surely, 2^628363873 is an apocalyptic number.

It is an amenable number.

628363873 is a deficient number, since it is larger than the sum of its proper divisors (179535).

628363873 is a wasteful number, since it uses less digits than its factorization.

628363873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179534.

The product of its digits is 870912, while the sum is 46.

The square root of 628363873 is about 25067.1871776632. The cubic root of 628363873 is about 856.5191341236.

The spelling of 628363873 in words is "six hundred twenty-eight million, three hundred sixty-three thousand, eight hundred seventy-three".