3655406 has 4 divisors (see below), whose sum is σ = 5483112. Its totient is φ = 1827702.

The previous prime is 3655397. The next prime is 3655411. The reversal of 3655406 is 6045563.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6045563 = 47 ⋅128629.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 913850 + ... + 913853.

It is an arithmetic number, because the mean of its divisors is an integer number (1370778).

Almost surely, 2^3655406 is an apocalyptic number.

3655406 is a deficient number, since it is larger than the sum of its proper divisors (1827706).

3655406 is a wasteful number, since it uses less digits than its factorization.

3655406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827705.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 3655406 is about 1911.9116088355. The cubic root of 3655406 is about 154.0441488084.

The spelling of 3655406 in words is "three million, six hundred fifty-five thousand, four hundred six".