628853885 has 24 divisors (see below), whose sum is σ = 874522656. Its totient is φ = 430434560.

The previous prime is 628853867. The next prime is 628853903. The reversal of 628853885 is 588358826.

It is an interprime number because it is at equal distance from previous prime (628853867) and next prime (628853903).

It is not a de Polignac number, because 628853885 - 2¹⁴ = 628837501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3887 + ... + 35676.

It is an arithmetic number, because the mean of its divisors is an integer number (36438444).

Almost surely, 2^628853885 is an apocalyptic number.

It is an amenable number.

628853885 is a deficient number, since it is larger than the sum of its proper divisors (245668771).

628853885 is a wasteful number, since it uses less digits than its factorization.

628853885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39613 (or 39596 counting only the distinct ones).

The product of its digits is 3686400, while the sum is 53.

The square root of 628853885 is about 25076.9592454907. The cubic root of 628853885 is about 856.7417204417.

The spelling of 628853885 in words is "six hundred twenty-eight million, eight hundred fifty-three thousand, eight hundred eighty-five".