2660089 has 2 divisors, whose sum is σ = 2660090. Its totient is φ = 2660088.

The previous prime is 2660087. The next prime is 2660107. The reversal of 2660089 is 9800662.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2418025 + 242064 = 1555^2 + 492^2 .

It is a cyclic number.

It is not a de Polignac number, because 2660089 - 2¹ = 2660087 is a prime.

Together with 2660087, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2660089.

It is not a weakly prime, because it can be changed into another prime (2660087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330044 + 1330045.

It is an arithmetic number, because the mean of its divisors is an integer number (1330045).

2^2660089 is an apocalyptic number.

It is an amenable number.

2660089 is a deficient number, since it is larger than the sum of its proper divisors (1).

2660089 is an equidigital number, since it uses as much as digits as its factorization.

2660089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 2660089 is about 1630.9779275024. The cubic root of 2660089 is about 138.5581435118.

The spelling of 2660089 in words is "two million, six hundred sixty thousand, eighty-nine".