6409761 has 4 divisors (see below), whose sum is σ = 8546352. Its totient is φ = 4273172.

The previous prime is 6409757. The next prime is 6409807. The reversal of 6409761 is 1679046.

It is a happy number.

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 6409761 - 2² = 6409757 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (6409721) 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, 1068291 + ... + 1068296.

It is an arithmetic number, because the mean of its divisors is an integer number (2136588).

Almost surely, 2^6409761 is an apocalyptic number.

It is an amenable number.

6409761 is a deficient number, since it is larger than the sum of its proper divisors (2136591).

6409761 is a wasteful number, since it uses less digits than its factorization.

6409761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136590.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 6409761 is about 2531.7505801323. The cubic root of 6409761 is about 185.7578940422.

It can be divided in two parts, 640 and 9761, that added together give a palindrome (10401).

The spelling of 6409761 in words is "six million, four hundred nine thousand, seven hundred sixty-one".