3647942 has 8 divisors (see below), whose sum is σ = 5492232. Its totient is φ = 1817200.

The previous prime is 3647927. The next prime is 3647947. The reversal of 3647942 is 2497463.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3647947) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2684 + ... + 3807.

It is an arithmetic number, because the mean of its divisors is an integer number (686529).

Almost surely, 2^3647942 is an apocalyptic number.

3647942 is a deficient number, since it is larger than the sum of its proper divisors (1844290).

3647942 is a wasteful number, since it uses less digits than its factorization.

3647942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6774.

The product of its digits is 36288, while the sum is 35.

The square root of 3647942 is about 1909.9586382956. The cubic root of 3647942 is about 153.9392294095.

The spelling of 3647942 in words is "three million, six hundred forty-seven thousand, nine hundred forty-two".