2660387 has 8 divisors (see below), whose sum is σ = 2805504. Its totient is φ = 2517768.

The previous prime is 2660377. The next prime is 2660401. The reversal of 2660387 is 7830662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2660387 - 2⁸ = 2660131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2660377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1808 + ... + 2930.

It is an arithmetic number, because the mean of its divisors is an integer number (350688).

2^2660387 is an apocalyptic number.

2660387 is a deficient number, since it is larger than the sum of its proper divisors (145117).

2660387 is a wasteful number, since it uses less digits than its factorization.

2660387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 2660387 is about 1631.0692811772. The cubic root of 2660387 is about 138.5633173719.

The spelling of 2660387 in words is "two million, six hundred sixty thousand, three hundred eighty-seven".