6720490 has 64 divisors (see below), whose sum is σ = 15114240. Its totient is φ = 2099520.

The previous prime is 6720481. The next prime is 6720499. The reversal of 6720490 is 940276.

It is an interprime number because it is at equal distance from previous prime (6720481) and next prime (6720499).

It is not an unprimeable number, because it can be changed into a prime (6720499) 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 31 ways as a sum of consecutive naturals, for example, 41149 + ... + 41311.

It is an arithmetic number, because the mean of its divisors is an integer number (236160).

Almost surely, 2^6720490 is an apocalyptic number.

6720490 is an abundant number, since it is smaller than the sum of its proper divisors (8393750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6720490 is a wasteful number, since it uses less digits than its factorization.

6720490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 6720490 is about 2592.3907884422. The cubic root of 6720490 is about 188.7123457481.

The spelling of 6720490 in words is "six million, seven hundred twenty thousand, four hundred ninety".