6156643 has 4 divisors (see below), whose sum is σ = 6201720. Its totient is φ = 6111568.

The previous prime is 6156641. The next prime is 6156659. The reversal of 6156643 is 3466516.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6156643 - 2¹ = 6156641 is a prime.

It is a Duffinian number.

6156643 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6156641) 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, 22333 + ... + 22606.

It is an arithmetic number, because the mean of its divisors is an integer number (1550430).

Almost surely, 2^6156643 is an apocalyptic number.

6156643 is a deficient number, since it is larger than the sum of its proper divisors (45077).

6156643 is a wasteful number, since it uses less digits than its factorization.

6156643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45076.

The product of its digits is 12960, while the sum is 31.

The square root of 6156643 is about 2481.2583501119. The cubic root of 6156643 is about 183.2798231344.

The spelling of 6156643 in words is "six million, one hundred fifty-six thousand, six hundred forty-three".