2340639 has 24 divisors (see below), whose sum is σ = 3942432. Its totient is φ = 1310400.

The previous prime is 2340617. The next prime is 2340659. The reversal of 2340639 is 9360432.

2340639 is a `hidden beast` number, since 23 + 4 + 0 + 639 = 666.

It is not a de Polignac number, because 2340639 - 2⁵ = 2340607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2340659) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2989 + ... + 3689.

It is an arithmetic number, because the mean of its divisors is an integer number (164268).

2^2340639 is an apocalyptic number.

2340639 is a deficient number, since it is larger than the sum of its proper divisors (1601793).

2340639 is a wasteful number, since it uses less digits than its factorization.

2340639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767 (or 764 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 2340639 is about 1529.9147035047. The cubic root of 2340639 is about 132.7735230215.

The spelling of 2340639 in words is "two million, three hundred forty thousand, six hundred thirty-nine".