6609451 has 4 divisors (see below), whose sum is σ = 6624072. Its totient is φ = 6594832.

The previous prime is 6609443. The next prime is 6609457. The reversal of 6609451 is 1549066.

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 6609451 - 2³ = 6609443 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6609457) 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, 6610 + ... + 7543.

It is an arithmetic number, because the mean of its divisors is an integer number (1656018).

Almost surely, 2^6609451 is an apocalyptic number.

6609451 is a deficient number, since it is larger than the sum of its proper divisors (14621).

6609451 is a wasteful number, since it uses less digits than its factorization.

6609451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14620.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 6609451 is about 2570.8852560937. The cubic root of 6609451 is about 187.6672380492.

The spelling of 6609451 in words is "six million, six hundred nine thousand, four hundred fifty-one".