628372646 has 16 divisors (see below), whose sum is σ = 1028671488. Its totient is φ = 285505800.

The previous prime is 628372643. The next prime is 628372669. The reversal of 628372646 is 646273826.

It is a junction number, because it is equal to n+sod(n) for n = 628372597 and 628372606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628372643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70391 + ... + 78813.

It is an arithmetic number, because the mean of its divisors is an integer number (64291968).

Almost surely, 2^628372646 is an apocalyptic number.

628372646 is a deficient number, since it is larger than the sum of its proper divisors (400298842).

628372646 is a wasteful number, since it uses less digits than its factorization.

628372646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11827.

The product of its digits is 580608, while the sum is 44.

The square root of 628372646 is about 25067.3621667698. The cubic root of 628372646 is about 856.5231202467.

The spelling of 628372646 in words is "six hundred twenty-eight million, three hundred seventy-two thousand, six hundred forty-six".