2366639 has 6 divisors (see below), whose sum is σ = 2601480. Its totient is φ = 2151380.

The previous prime is 2366629. The next prime is 2366647. The reversal of 2366639 is 9366632.

2366639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2366639 - 2²⁰ = 1318063 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2366599 and 2366608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2366629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9659 + ... + 9900.

It is an arithmetic number, because the mean of its divisors is an integer number (433580).

2^2366639 is an apocalyptic number.

2366639 is a deficient number, since it is larger than the sum of its proper divisors (234841).

2366639 is a wasteful number, since it uses less digits than its factorization.

2366639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19581 (or 19570 counting only the distinct ones).

The product of its digits is 34992, while the sum is 35.

The square root of 2366639 is about 1538.3884424943. The cubic root of 2366639 is about 133.2633333954.

The spelling of 2366639 in words is "two million, three hundred sixty-six thousand, six hundred thirty-nine".