2405671 has 4 divisors (see below), whose sum is σ = 2419144. Its totient is φ = 2392200.

The previous prime is 2405651. The next prime is 2405677. The reversal of 2405671 is 1765042.

2405671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2405671 - 2¹⁷ = 2274599 is a prime.

It is a Duffinian number.

2405671 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2405677) 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 3 ways as a sum of consecutive naturals, for example, 6465 + ... + 6826.

It is an arithmetic number, because the mean of its divisors is an integer number (604786).

2^2405671 is an apocalyptic number.

2405671 is a deficient number, since it is larger than the sum of its proper divisors (13473).

2405671 is a wasteful number, since it uses less digits than its factorization.

2405671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13472.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 2405671 is about 1551.0225659222. The cubic root of 2405671 is about 133.9919613504.

The spelling of 2405671 in words is "two million, four hundred five thousand, six hundred seventy-one".