6612661 has 16 divisors (see below), whose sum is σ = 7672320. Its totient is φ = 5639920.

The previous prime is 6612659. The next prime is 6612673. The reversal of 6612661 is 1662166.

6612661 = T₂₃₈ + T₂₃₉ + ... + T₃₇₅.

It is not a de Polignac number, because 6612661 - 2¹ = 6612659 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 (6612601) 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 15 ways as a sum of consecutive naturals, for example, 14706 + ... + 15148.

It is an arithmetic number, because the mean of its divisors is an integer number (479520).

Almost surely, 2^6612661 is an apocalyptic number.

It is an amenable number.

6612661 is a deficient number, since it is larger than the sum of its proper divisors (1059659).

6612661 is a wasteful number, since it uses less digits than its factorization.

6612661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536.

The product of its digits is 2592, while the sum is 28.

The square root of 6612661 is about 2571.5094788859. The cubic root of 6612661 is about 187.6976144671.

The spelling of 6612661 in words is "six million, six hundred twelve thousand, six hundred sixty-one".