2660887 has 2 divisors, whose sum is σ = 2660888. Its totient is φ = 2660886.

The previous prime is 2660873. The next prime is 2660899. The reversal of 2660887 is 7880662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2660887 - 2¹⁹ = 2136599 is a prime.

It is a congruent number.

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, 1330443 + 1330444.

It is an arithmetic number, because the mean of its divisors is an integer number (1330444).

2^2660887 is an apocalyptic number.

2660887 is a deficient number, since it is larger than the sum of its proper divisors (1).

2660887 is an equidigital number, since it uses as much as digits as its factorization.

2660887 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 2660887 is about 1631.2225476617. Note that the first 3 decimals coincide. The cubic root of 2660887 is about 138.5719974773.

The spelling of 2660887 in words is "two million, six hundred sixty thousand, eight hundred eighty-seven".