6620738 has 8 divisors (see below), whose sum is σ = 9953280. Its totient is φ = 3302980.

The previous prime is 6620717. The next prime is 6620741. The reversal of 6620738 is 8370266.

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

It is a Curzon number.

It is a congruent number.

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, 2498 + ... + 4413.

It is an arithmetic number, because the mean of its divisors is an integer number (1244160).

Almost surely, 2^6620738 is an apocalyptic number.

6620738 is a deficient number, since it is larger than the sum of its proper divisors (3332542).

6620738 is a wasteful number, since it uses less digits than its factorization.

6620738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7392.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 6620738 is about 2573.0794779796. The cubic root of 6620738 is about 187.7740041283.

The spelling of 6620738 in words is "six million, six hundred twenty thousand, seven hundred thirty-eight".