3656406 has 16 divisors (see below), whose sum is σ = 7875504. Its totient is φ = 1125024.

The previous prime is 3656383. The next prime is 3656413. The reversal of 3656406 is 6046563.

It is a d-powerful number, because it can be written as 3⁶ + 6⁷ + 5³ + 6⁸ + 4⁷ + 0 + 6⁸ .

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, 23361 + ... + 23516.

It is an arithmetic number, because the mean of its divisors is an integer number (492219).

Almost surely, 2^3656406 is an apocalyptic number.

3656406 is an abundant number, since it is smaller than the sum of its proper divisors (4219098).

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

3656406 is a wasteful number, since it uses less digits than its factorization.

3656406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46895.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 3656406 is about 1912.1731093183. The cubic root of 3656406 is about 154.0581946813.

The spelling of 3656406 in words is "three million, six hundred fifty-six thousand, four hundred six".