6620972 has 12 divisors (see below), whose sum is σ = 11805696. Its totient is φ = 3247920.

The previous prime is 6620953. The next prime is 6620981. The reversal of 6620972 is 2790266.

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, 15404 + ... + 15827.

It is an arithmetic number, because the mean of its divisors is an integer number (983808).

Almost surely, 2^6620972 is an apocalyptic number.

It is an amenable number.

6620972 is a deficient number, since it is larger than the sum of its proper divisors (5184724).

6620972 is a wasteful number, since it uses less digits than its factorization.

6620972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31288 (or 31286 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 6620972 is about 2573.1249483847. The cubic root of 6620972 is about 187.7762162986.

The spelling of 6620972 in words is "six million, six hundred twenty thousand, nine hundred seventy-two".