6616551 has 8 divisors (see below), whose sum is σ = 8867200. Its totient is φ = 4388472.

The previous prime is 6616549. The next prime is 6616567. The reversal of 6616551 is 1556166.

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

It is not a de Polignac number, because 6616551 - 2¹ = 6616549 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 (6616531) 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, 4945 + ... + 6138.

It is an arithmetic number, because the mean of its divisors is an integer number (1108400).

Almost surely, 2^6616551 is an apocalyptic number.

6616551 is a deficient number, since it is larger than the sum of its proper divisors (2250649).

6616551 is a wasteful number, since it uses less digits than its factorization.

6616551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11285.

The product of its digits is 5400, while the sum is 30.

The square root of 6616551 is about 2572.2657327733. The cubic root of 6616551 is about 187.7344125929.

The spelling of 6616551 in words is "six million, six hundred sixteen thousand, five hundred fifty-one".