3656345 has 16 divisors (see below), whose sum is σ = 5470848. Its totient is φ = 2279040.

The previous prime is 3656329. The next prime is 3656353. The reversal of 3656345 is 5436563.

It is not a de Polignac number, because 3656345 - 2⁴ = 3656329 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4364 + ... + 5133.

It is an arithmetic number, because the mean of its divisors is an integer number (341928).

Almost surely, 2^3656345 is an apocalyptic number.

3656345 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3656345 is a deficient number, since it is larger than the sum of its proper divisors (1814503).

3656345 is a wasteful number, since it uses less digits than its factorization.

3656345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9520.

The product of its digits is 32400, while the sum is 32.

The square root of 3656345 is about 1912.1571588131. The cubic root of 3656345 is about 154.0573379564.

The spelling of 3656345 in words is "three million, six hundred fifty-six thousand, three hundred forty-five".