6617631 has 8 divisors (see below), whose sum is σ = 8914864. Its totient is φ = 4366080.

The previous prime is 6617627. The next prime is 6617693. The reversal of 6617631 is 1367166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6617631 - 2² = 6617627 is a prime.

It is a super-2 number, since 2×6617631² = 87586080104322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6617431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11080 + ... + 11661.

It is an arithmetic number, because the mean of its divisors is an integer number (1114358).

Almost surely, 2^6617631 is an apocalyptic number.

6617631 is a deficient number, since it is larger than the sum of its proper divisors (2297233).

6617631 is a wasteful number, since it uses less digits than its factorization.

6617631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22841.

The product of its digits is 4536, while the sum is 30.

The square root of 6617631 is about 2572.4756558615. The cubic root of 6617631 is about 187.7446264810.

The spelling of 6617631 in words is "six million, six hundred seventeen thousand, six hundred thirty-one".