2609406 has 12 divisors (see below), whose sum is σ = 5653752. Its totient is φ = 869796.

The previous prime is 2609401. The next prime is 2609407. The reversal of 2609406 is 6049062.

It is a super-3 number, since 3×2609406³ = 53302333800888886248, which contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2609406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2609401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72466 + ... + 72501.

It is an arithmetic number, because the mean of its divisors is an integer number (471146).

2^2609406 is an apocalyptic number.

2609406 is an abundant number, since it is smaller than the sum of its proper divisors (3044346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2609406 is a wasteful number, since it uses less digits than its factorization.

2609406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144975 (or 144972 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 2609406 is about 1615.3655932946. The cubic root of 2609406 is about 137.6725063495.

The spelling of 2609406 in words is "two million, six hundred nine thousand, four hundred six".