2609655 has 8 divisors (see below), whose sum is σ = 4175472. Its totient is φ = 1391808.

The previous prime is 2609639. The next prime is 2609657. The reversal of 2609655 is 5569062.

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

It is not a de Polignac number, because 2609655 - 2⁴ = 2609639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2609657) 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, 86974 + ... + 87003.

It is an arithmetic number, because the mean of its divisors is an integer number (521934).

2^2609655 is an apocalyptic number.

2609655 is a deficient number, since it is larger than the sum of its proper divisors (1565817).

2609655 is a wasteful number, since it uses less digits than its factorization.

2609655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173985.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 2609655 is about 1615.4426637922. The cubic root of 2609655 is about 137.6768852980.

The spelling of 2609655 in words is "two million, six hundred nine thousand, six hundred fifty-five".