3647143 has 4 divisors (see below), whose sum is σ = 3655120. Its totient is φ = 3639168.

The previous prime is 3647101. The next prime is 3647167. The reversal of 3647143 is 3417463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3417463 = 7 ⋅488209.

It is a cyclic number.

It is not a de Polignac number, because 3647143 - 2¹³ = 3638951 is a prime.

It is a Duffinian number.

3647143 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3647173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3258 + ... + 4231.

It is an arithmetic number, because the mean of its divisors is an integer number (913780).

Almost surely, 2^3647143 is an apocalyptic number.

3647143 is a deficient number, since it is larger than the sum of its proper divisors (7977).

3647143 is an equidigital number, since it uses as much as digits as its factorization.

3647143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7976.

The product of its digits is 6048, while the sum is 28.

The square root of 3647143 is about 1909.7494600078. The cubic root of 3647143 is about 153.9279896086.

The spelling of 3647143 in words is "three million, six hundred forty-seven thousand, one hundred forty-three".