628562468 has 6 divisors (see below), whose sum is σ = 1099984326. Its totient is φ = 314281232.

The previous prime is 628562399. The next prime is 628562477. The reversal of 628562468 is 864265826.

It can be written as a sum of positive squares in only one way, i.e., 393308224 + 235254244 = 19832^2 + 15338^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78570305 + ... + 78570312.

It is an arithmetic number, because the mean of its divisors is an integer number (183330721).

Almost surely, 2^628562468 is an apocalyptic number.

It is an amenable number.

628562468 is a deficient number, since it is larger than the sum of its proper divisors (471421858).

628562468 is a wasteful number, since it uses less digits than its factorization.

628562468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157140621 (or 157140619 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 47.

The square root of 628562468 is about 25071.1481189035. The cubic root of 628562468 is about 856.6093591815.

The spelling of 628562468 in words is "six hundred twenty-eight million, five hundred sixty-two thousand, four hundred sixty-eight".