6621242 has 8 divisors (see below), whose sum is σ = 10051776. Its totient is φ = 3270652.

The previous prime is 6621239. The next prime is 6621281. The reversal of 6621242 is 2421266.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19778 + ... + 20109.

It is an arithmetic number, because the mean of its divisors is an integer number (1256472).

Almost surely, 2^6621242 is an apocalyptic number.

6621242 is a deficient number, since it is larger than the sum of its proper divisors (3430534).

6621242 is a wasteful number, since it uses less digits than its factorization.

6621242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39972.

The product of its digits is 1152, while the sum is 23.

The square root of 6621242 is about 2573.1774132383. The cubic root of 6621242 is about 187.7787687380.

The spelling of 6621242 in words is "six million, six hundred twenty-one thousand, two hundred forty-two".