6288661 has 4 divisors (see below), whose sum is σ = 6364512. Its totient is φ = 6212812.

The previous prime is 6288649. The next prime is 6288701. The reversal of 6288661 is 1668826.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6288661 is a prime.

It is an Ulam number.

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 6288661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6288761) 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, 37801 + ... + 37966.

It is an arithmetic number, because the mean of its divisors is an integer number (1591128).

Almost surely, 2^6288661 is an apocalyptic number.

It is an amenable number.

6288661 is a deficient number, since it is larger than the sum of its proper divisors (75851).

6288661 is an equidigital number, since it uses as much as digits as its factorization.

6288661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75850.

The product of its digits is 27648, while the sum is 37.

The square root of 6288661 is about 2507.7202794570. The cubic root of 6288661 is about 184.5806033880.

The spelling of 6288661 in words is "six million, two hundred eighty-eight thousand, six hundred sixty-one".