6720442 has 8 divisors (see below), whose sum is σ = 10100736. Its totient is φ = 3353532.

The previous prime is 6720437. The next prime is 6720443. The reversal of 6720442 is 2440276.

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

It is not an unprimeable number, because it can be changed into a prime (6720443) 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 3 ways as a sum of consecutive naturals, for example, 1978 + ... + 4165.

It is an arithmetic number, because the mean of its divisors is an integer number (1262592).

Almost surely, 2^6720442 is an apocalyptic number.

6720442 is a deficient number, since it is larger than the sum of its proper divisors (3380294).

6720442 is a wasteful number, since it uses less digits than its factorization.

6720442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6692.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 6720442 is about 2592.3815305622. The cubic root of 6720442 is about 188.7118964647.

The spelling of 6720442 in words is "six million, seven hundred twenty thousand, four hundred forty-two".