628746133 has 2 divisors, whose sum is σ = 628746134. Its totient is φ = 628746132.

The previous prime is 628746113. The next prime is 628746161. The reversal of 628746133 is 331647826.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 399920004 + 228826129 = 19998^2 + 15127^2 .

It is a cyclic number.

It is not a de Polignac number, because 628746133 - 2²⁹ = 91875221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628746103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314373066 + 314373067.

It is an arithmetic number, because the mean of its divisors is an integer number (314373067).

Almost surely, 2^628746133 is an apocalyptic number.

It is an amenable number.

628746133 is a deficient number, since it is larger than the sum of its proper divisors (1).

628746133 is an equidigital number, since it uses as much as digits as its factorization.

628746133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 40.

The square root of 628746133 is about 25074.8107271022. The cubic root of 628746133 is about 856.6927843750.

The spelling of 628746133 in words is "six hundred twenty-eight million, seven hundred forty-six thousand, one hundred thirty-three".