6620072 has 16 divisors (see below), whose sum is σ = 13143060. Its totient is φ = 3115264.

The previous prime is 6620059. The next prime is 6620083. The reversal of 6620072 is 2700266.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6421156 + 198916 = 2534^2 + 446^2 .

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, 24203 + ... + 24474.

Almost surely, 2^6620072 is an apocalyptic number.

It is an amenable number.

6620072 is a deficient number, since it is larger than the sum of its proper divisors (6522988).

6620072 is a wasteful number, since it uses less digits than its factorization.

6620072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48700 (or 48696 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 6620072 is about 2572.9500578130. The cubic root of 6620072 is about 187.7677076661.

The spelling of 6620072 in words is "six million, six hundred twenty thousand, seventy-two".