3609655 has 16 divisors (see below), whose sum is σ = 4990464. Its totient is φ = 2455200.

The previous prime is 3609649. The next prime is 3609673. The reversal of 3609655 is 5569063.

It is not a de Polignac number, because 3609655 - 2⁵ = 3609623 is a prime.

It is a Duffinian number.

3609655 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3609655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4944 + ... + 5626.

It is an arithmetic number, because the mean of its divisors is an integer number (311904).

Almost surely, 2^3609655 is an apocalyptic number.

3609655 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3609655 is a deficient number, since it is larger than the sum of its proper divisors (1380809).

3609655 is a wasteful number, since it uses less digits than its factorization.

3609655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846.

The product of its (nonzero) digits is 24300, while the sum is 34.

The square root of 3609655 is about 1899.9092083571. The cubic root of 3609655 is about 153.3987774619.

The spelling of 3609655 in words is "three million, six hundred nine thousand, six hundred fifty-five".