7660889 has 2 divisors, whose sum is σ = 7660890. Its totient is φ = 7660888.

The previous prime is 7660883. The next prime is 7660907. The reversal of 7660889 is 9880667.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7198489 + 462400 = 2683^2 + 680^2 .

It is an emirp because it is prime and its reverse (9880667) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7660889 - 2¹⁶ = 7595353 is a prime.

It is not a weakly prime, because it can be changed into another prime (7660883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3830444 + 3830445.

It is an arithmetic number, because the mean of its divisors is an integer number (3830445).

Almost surely, 2^7660889 is an apocalyptic number.

It is an amenable number.

7660889 is a deficient number, since it is larger than the sum of its proper divisors (1).

7660889 is an equidigital number, since it uses as much as digits as its factorization.

7660889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 7660889 is about 2767.8311003383. The cubic root of 7660889 is about 197.1331780037.

The spelling of 7660889 in words is "seven million, six hundred sixty thousand, eight hundred eighty-nine".