2665387 has 2 divisors, whose sum is σ = 2665388. Its totient is φ = 2665386.

The previous prime is 2665373. The next prime is 2665391. The reversal of 2665387 is 7835662.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2665387 is a prime.

It is not a weakly prime, because it can be changed into another prime (2665357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332693 + 1332694.

It is an arithmetic number, because the mean of its divisors is an integer number (1332694).

2^2665387 is an apocalyptic number.

2665387 is a deficient number, since it is larger than the sum of its proper divisors (1).

2665387 is an equidigital number, since it uses as much as digits as its factorization.

2665387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 37.

The square root of 2665387 is about 1632.6012985417. The cubic root of 2665387 is about 138.6500695383.

The spelling of 2665387 in words is "two million, six hundred sixty-five thousand, three hundred eighty-seven".