2489665 has 16 divisors (see below), whose sum is σ = 3196800. Its totient is φ = 1855872.

The previous prime is 2489659. The next prime is 2489671. The reversal of 2489665 is 5669842.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2489659) and next prime (2489671).

It is a cyclic number.

It is not a de Polignac number, because 2489665 - 2¹⁹ = 1965377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6756 + ... + 7114.

It is an arithmetic number, because the mean of its divisors is an integer number (199800).

2^2489665 is an apocalyptic number.

It is an amenable number.

2489665 is a deficient number, since it is larger than the sum of its proper divisors (707135).

2489665 is a wasteful number, since it uses less digits than its factorization.

2489665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456.

The product of its digits is 103680, while the sum is 40.

The square root of 2489665 is about 1577.8672314235. The cubic root of 2489665 is about 135.5335991442.

The spelling of 2489665 in words is "two million, four hundred eighty-nine thousand, six hundred sixty-five".