7628689 has 2 divisors, whose sum is σ = 7628690. Its totient is φ = 7628688.

The previous prime is 7628681. The next prime is 7628717. The reversal of 7628689 is 9868267.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5760000 + 1868689 = 2400^2 + 1367^2 .

It is a cyclic number.

It is not a de Polignac number, because 7628689 - 2³ = 7628681 is a prime.

It is not a weakly prime, because it can be changed into another prime (7628681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3814344 + 3814345.

It is an arithmetic number, because the mean of its divisors is an integer number (3814345).

Almost surely, 2^7628689 is an apocalyptic number.

It is an amenable number.

7628689 is a deficient number, since it is larger than the sum of its proper divisors (1).

7628689 is an equidigital number, since it uses as much as digits as its factorization.

7628689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 46.

The square root of 7628689 is about 2762.0081462588. The cubic root of 7628689 is about 196.8565955417.

The spelling of 7628689 in words is "seven million, six hundred twenty-eight thousand, six hundred eighty-nine".