2609646 has 16 divisors (see below), whose sum is σ = 5620944. Its totient is φ = 802944.

The previous prime is 2609639. The next prime is 2609657. The reversal of 2609646 is 6469062.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16651 + ... + 16806.

It is an arithmetic number, because the mean of its divisors is an integer number (351309).

2^2609646 is an apocalyptic number.

2609646 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2609646 is an abundant number, since it is smaller than the sum of its proper divisors (3011298).

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

2609646 is a wasteful number, since it uses less digits than its factorization.

2609646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33475.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 2609646 is about 1615.4398781756. The cubic root of 2609646 is about 137.6767270276.

The spelling of 2609646 in words is "two million, six hundred nine thousand, six hundred forty-six".