2644609 has 8 divisors (see below), whose sum is σ = 3010752. Its totient is φ = 2299440.

The previous prime is 2644573. The next prime is 2644613. The reversal of 2644609 is 9064462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2644609 - 2¹¹ = 2642561 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2644619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4974 + ... + 5479.

It is an arithmetic number, because the mean of its divisors is an integer number (376344).

2^2644609 is an apocalyptic number.

It is an amenable number.

2644609 is a deficient number, since it is larger than the sum of its proper divisors (366143).

2644609 is a wasteful number, since it uses less digits than its factorization.

2644609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10487.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 2644609 is about 1626.2253841335. The cubic root of 2644609 is about 138.2888474881.

The spelling of 2644609 in words is "two million, six hundred forty-four thousand, six hundred nine".