6617651 has 4 divisors (see below), whose sum is σ = 6665400. Its totient is φ = 6569904.

The previous prime is 6617627. The next prime is 6617693. The reversal of 6617651 is 1567166.

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 6617651 - 2¹⁸ = 6355507 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (6611651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23666 + ... + 23943.

It is an arithmetic number, because the mean of its divisors is an integer number (1666350).

Almost surely, 2^6617651 is an apocalyptic number.

6617651 is a deficient number, since it is larger than the sum of its proper divisors (47749).

6617651 is a wasteful number, since it uses less digits than its factorization.

6617651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47748.

The product of its digits is 7560, while the sum is 32.

The square root of 6617651 is about 2572.4795431645. The cubic root of 6617651 is about 187.7448156166.

The spelling of 6617651 in words is "six million, six hundred seventeen thousand, six hundred fifty-one".