6140643 has 4 divisors (see below), whose sum is σ = 8187528. Its totient is φ = 4093760.

The previous prime is 6140593. The next prime is 6140647. The reversal of 6140643 is 3460416.

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 6140643 - 2⁶ = 6140579 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (6140647) 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, 1023438 + ... + 1023443.

It is an arithmetic number, because the mean of its divisors is an integer number (2046882).

Almost surely, 2^6140643 is an apocalyptic number.

6140643 is a deficient number, since it is larger than the sum of its proper divisors (2046885).

6140643 is a wasteful number, since it uses less digits than its factorization.

6140643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2046884.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 6140643 is about 2478.0320821168. The cubic root of 6140643 is about 183.1209150428.

It can be divided in two parts, 61 and 40643, that added together give a palindrome (40704).

The spelling of 6140643 in words is "six million, one hundred forty thousand, six hundred forty-three".