628880093 has 2 divisors, whose sum is σ = 628880094. Its totient is φ = 628880092.

The previous prime is 628880089. The next prime is 628880111. The reversal of 628880093 is 390088826.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 474673369 + 154206724 = 21787^2 + 12418^2 .

It is a cyclic number.

It is not a de Polignac number, because 628880093 - 2² = 628880089 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (628880893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314440046 + 314440047.

It is an arithmetic number, because the mean of its divisors is an integer number (314440047).

Almost surely, 2^628880093 is an apocalyptic number.

It is an amenable number.

628880093 is a deficient number, since it is larger than the sum of its proper divisors (1).

628880093 is an equidigital number, since it uses as much as digits as its factorization.

628880093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 628880093 is about 25077.4817914399. The cubic root of 628880093 is about 856.7536220804.

The spelling of 628880093 in words is "six hundred twenty-eight million, eight hundred eighty thousand, ninety-three".