7648789 has 2 divisors, whose sum is σ = 7648790. Its totient is φ = 7648788.

The previous prime is 7648777. The next prime is 7648813. The reversal of 7648789 is 9878467.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4558225 + 3090564 = 2135^2 + 1758^2 .

It is an emirp because it is prime and its reverse (9878467) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7648789 - 2⁵ = 7648757 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7645789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3824394 + 3824395.

It is an arithmetic number, because the mean of its divisors is an integer number (3824395).

Almost surely, 2^7648789 is an apocalyptic number.

It is an amenable number.

7648789 is a deficient number, since it is larger than the sum of its proper divisors (1).

7648789 is an equidigital number, since it uses as much as digits as its factorization.

7648789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 49.

The square root of 7648789 is about 2765.6444095364. The cubic root of 7648789 is about 197.0293359046.

The spelling of 7648789 in words is "seven million, six hundred forty-eight thousand, seven hundred eighty-nine".