2309606 has 16 divisors (see below), whose sum is σ = 3757488. Its totient is φ = 1058400.

The previous prime is 2309551. The next prime is 2309609. The reversal of 2309606 is 6069032.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2309609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5276 + ... + 5696.

It is an arithmetic number, because the mean of its divisors is an integer number (234843).

2^2309606 is an apocalyptic number.

2309606 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2309606 is a deficient number, since it is larger than the sum of its proper divisors (1447882).

2309606 is a wasteful number, since it uses less digits than its factorization.

2309606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 2309606 is about 1519.7387933458. The cubic root of 2309606 is about 132.1841247436.

2309606 divided by its sum of digits (26) gives a triangular number (88831 = T₄₂₁).

The spelling of 2309606 in words is "two million, three hundred nine thousand, six hundred six".