2378609 has 4 divisors (see below), whose sum is σ = 2460660. Its totient is φ = 2296560.

The previous prime is 2378569. The next prime is 2378617. The reversal of 2378609 is 9068732.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1960000 + 418609 = 1400^2 + 647^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2378609 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2378669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40982 + ... + 41039.

It is an arithmetic number, because the mean of its divisors is an integer number (615165).

2^2378609 is an apocalyptic number.

2378609 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2378609 is a deficient number, since it is larger than the sum of its proper divisors (82051).

2378609 is an equidigital number, since it uses as much as digits as its factorization.

2378609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82050.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 2378609 is about 1542.2739704735. The cubic root of 2378609 is about 133.4876290163.

The spelling of 2378609 in words is "two million, three hundred seventy-eight thousand, six hundred nine".