2405644 has 6 divisors (see below), whose sum is σ = 4209884. Its totient is φ = 1202820.

The previous prime is 2405633. The next prime is 2405651. The reversal of 2405644 is 4465042.

It is a plaindrome in base 14.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300702 + ... + 300709.

2^2405644 is an apocalyptic number.

It is an amenable number.

2405644 is a deficient number, since it is larger than the sum of its proper divisors (1804240).

2405644 is a wasteful number, since it uses less digits than its factorization.

2405644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601415 (or 601413 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 2405644 is about 1551.0138619626. The cubic root of 2405644 is about 133.9914600632.

The spelling of 2405644 in words is "two million, four hundred five thousand, six hundred forty-four".