628062289 has 4 divisors (see below), whose sum is σ = 636665956. Its totient is φ = 619458624.

The previous prime is 628062277. The next prime is 628062299. The reversal of 628062289 is 982260826.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 276124689 + 351937600 = 16617^2 + 18760^2 .

It is a cyclic number.

It is not a de Polignac number, because 628062289 - 2²⁹ = 91191377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628062299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4301724 + ... + 4301869.

It is an arithmetic number, because the mean of its divisors is an integer number (159166489).

Almost surely, 2^628062289 is an apocalyptic number.

It is an amenable number.

628062289 is a deficient number, since it is larger than the sum of its proper divisors (8603667).

628062289 is an equidigital number, since it uses as much as digits as its factorization.

628062289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8603666.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 628062289 is about 25061.1709423163. The cubic root of 628062289 is about 856.3820830642.

The spelling of 628062289 in words is "six hundred twenty-eight million, sixty-two thousand, two hundred eighty-nine".