6340861 has 4 divisors (see below), whose sum is σ = 6350400. Its totient is φ = 6331324.

The previous prime is 6340849. The next prime is 6340871. The reversal of 6340861 is 1680436.

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 a de Polignac number, because none of the positive numbers 2^k-6340861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6340811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3691 + ... + 5128.

It is an arithmetic number, because the mean of its divisors is an integer number (1587600).

Almost surely, 2^6340861 is an apocalyptic number.

It is an amenable number.

6340861 is a deficient number, since it is larger than the sum of its proper divisors (9539).

6340861 is an equidigital number, since it uses as much as digits as its factorization.

6340861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9538.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 6340861 is about 2518.1066299901. The cubic root of 6340861 is about 185.0899100341.

The spelling of 6340861 in words is "six million, three hundred forty thousand, eight hundred sixty-one".