6617447 has 4 divisors (see below), whose sum is σ = 6636240. Its totient is φ = 6598656.

The previous prime is 6617431. The next prime is 6617449. The reversal of 6617447 is 7447166.

It is a happy number.

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 6617447 - 2⁴ = 6617431 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 (6617449) 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, 8858 + ... + 9575.

It is an arithmetic number, because the mean of its divisors is an integer number (1659060).

Almost surely, 2^6617447 is an apocalyptic number.

6617447 is a deficient number, since it is larger than the sum of its proper divisors (18793).

6617447 is a wasteful number, since it uses less digits than its factorization.

6617447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18792.

The product of its digits is 28224, while the sum is 35.

The square root of 6617447 is about 2572.4398923979. The cubic root of 6617447 is about 187.7428864157.

The spelling of 6617447 in words is "six million, six hundred seventeen thousand, four hundred forty-seven".