6616061 has 4 divisors (see below), whose sum is σ = 6621372. Its totient is φ = 6610752.

The previous prime is 6616033. The next prime is 6616069. The reversal of 6616061 is 1606166.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2910436 + 3705625 = 1706^2 + 1925^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6616061 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6616061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6616069) 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, 341 + ... + 3653.

It is an arithmetic number, because the mean of its divisors is an integer number (1655343).

Almost surely, 2^6616061 is an apocalyptic number.

It is an amenable number.

6616061 is a deficient number, since it is larger than the sum of its proper divisors (5311).

6616061 is a wasteful number, since it uses less digits than its factorization.

6616061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5310.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 6616061 is about 2572.1704842409. The cubic root of 6616061 is about 187.7297781475.

The spelling of 6616061 in words is "six million, six hundred sixteen thousand, sixty-one".