3651406 has 16 divisors (see below), whose sum is σ = 6006960. Its totient is φ = 1650880.

The previous prime is 3651341. The next prime is 3651407. The reversal of 3651406 is 6041563.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3651407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5610 + ... + 6226.

It is an arithmetic number, because the mean of its divisors is an integer number (375435).

Almost surely, 2^3651406 is an apocalyptic number.

3651406 is a deficient number, since it is larger than the sum of its proper divisors (2355554).

3651406 is a wasteful number, since it uses less digits than its factorization.

3651406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 3651406 is about 1910.8652490430. The cubic root of 3651406 is about 153.9879396863.

Adding to 3651406 its reverse (6041563), we get a palindrome (9692969).

It can be divided in two parts, 365 and 1406, that added together give a palindrome (1771).

The spelling of 3651406 in words is "three million, six hundred fifty-one thousand, four hundred six".