628862686 has 8 divisors (see below), whose sum is σ = 948034800. Its totient is φ = 312851088.

The previous prime is 628862681. The next prime is 628862687. The reversal of 628862686 is 686268826.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628862681) 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, 789631 + ... + 790426.

It is an arithmetic number, because the mean of its divisors is an integer number (118504350).

Almost surely, 2^628862686 is an apocalyptic number.

628862686 is a deficient number, since it is larger than the sum of its proper divisors (319172114).

628862686 is a wasteful number, since it uses less digits than its factorization.

628862686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580258.

The product of its digits is 2654208, while the sum is 52.

The square root of 628862686 is about 25077.1347246850. The cubic root of 628862686 is about 856.7457172094.

The spelling of 628862686 in words is "six hundred twenty-eight million, eight hundred sixty-two thousand, six hundred eighty-six".