2607989 has 2 divisors, whose sum is σ = 2607990. Its totient is φ = 2607988.

The previous prime is 2607973. The next prime is 2607991. The reversal of 2607989 is 9897062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2427364 + 180625 = 1558^2 + 425^2 .

It is a cyclic number.

It is not a de Polignac number, because 2607989 - 2⁴ = 2607973 is a prime.

Together with 2607991, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2607929) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1303994 + 1303995.

It is an arithmetic number, because the mean of its divisors is an integer number (1303995).

2^2607989 is an apocalyptic number.

It is an amenable number.

2607989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2607989 is an equidigital number, since it uses as much as digits as its factorization.

2607989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 2607989 is about 1614.9269333317. The cubic root of 2607989 is about 137.6475814861.

The spelling of 2607989 in words is "two million, six hundred seven thousand, nine hundred eighty-nine".