628293197 has 16 divisors (see below), whose sum is σ = 757568640. Its totient is φ = 509027328.

The previous prime is 628293187. The next prime is 628293203. The reversal of 628293197 is 791392826.

It is a happy number.

It is not a de Polignac number, because 628293197 - 2⁸ = 628292941 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628293187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55613 + ... + 65949.

It is an arithmetic number, because the mean of its divisors is an integer number (47348040).

Almost surely, 2^628293197 is an apocalyptic number.

It is an amenable number.

628293197 is a deficient number, since it is larger than the sum of its proper divisors (129275443).

628293197 is a wasteful number, since it uses less digits than its factorization.

628293197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10820.

The product of its digits is 326592, while the sum is 47.

The square root of 628293197 is about 25065.7774066555. Note that the first 3 decimals coincide. The cubic root of 628293197 is about 856.4870202382.

The spelling of 628293197 in words is "six hundred twenty-eight million, two hundred ninety-three thousand, one hundred ninety-seven".