6340749 has 4 divisors (see below), whose sum is σ = 8454336. Its totient is φ = 4227164.

The previous prime is 6340739. The next prime is 6340757. The reversal of 6340749 is 9470436.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6340749 - 2⁹ = 6340237 is a prime.

It is a D-number.

It is a Curzon number.

6340749 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6340739) 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, 1056789 + ... + 1056794.

It is an arithmetic number, because the mean of its divisors is an integer number (2113584).

Almost surely, 2^6340749 is an apocalyptic number.

It is an amenable number.

6340749 is a deficient number, since it is larger than the sum of its proper divisors (2113587).

6340749 is a wasteful number, since it uses less digits than its factorization.

6340749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113586.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 6340749 is about 2518.0843909607. The cubic root of 6340749 is about 185.0888202667.

The spelling of 6340749 in words is "six million, three hundred forty thousand, seven hundred forty-nine".