3680655 has 16 divisors (see below), whose sum is σ = 6424704. Its totient is φ = 1784480.

The previous prime is 3680647. The next prime is 3680657. The reversal of 3680655 is 5560863.

3680655 = T₃₃₈ + T₃₃₉ + ... + T₃₉₂.

3680655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3680655 - 2³ = 3680647 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3680657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10989 + ... + 11318.

It is an arithmetic number, because the mean of its divisors is an integer number (401544).

Almost surely, 2^3680655 is an apocalyptic number.

3680655 is a deficient number, since it is larger than the sum of its proper divisors (2744049).

3680655 is a wasteful number, since it uses less digits than its factorization.

3680655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22326.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 3680655 is about 1918.5033229056. The cubic root of 3680655 is about 154.3980118897.

The spelling of 3680655 in words is "three million, six hundred eighty thousand, six hundred fifty-five".