6143645 has 16 divisors (see below), whose sum is σ = 7886592. Its totient is φ = 4583040.

The previous prime is 6143639. The next prime is 6143651. The reversal of 6143645 is 5463416.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6143639) and next prime (6143651).

It is not a de Polignac number, because 6143645 - 2⁴ = 6143629 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4064 + ... + 5366.

It is an arithmetic number, because the mean of its divisors is an integer number (492912).

Almost surely, 2^6143645 is an apocalyptic number.

It is an amenable number.

6143645 is a deficient number, since it is larger than the sum of its proper divisors (1742947).

6143645 is a wasteful number, since it uses less digits than its factorization.

6143645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372.

The product of its digits is 8640, while the sum is 29.

The square root of 6143645 is about 2478.6377306900. The cubic root of 6143645 is about 183.1507511924.

The spelling of 6143645 in words is "six million, one hundred forty-three thousand, six hundred forty-five".