6620297 has 8 divisors (see below), whose sum is σ = 7004544. Its totient is φ = 6244128.

The previous prime is 6620291. The next prime is 6620309. The reversal of 6620297 is 7920266.

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

It is not a de Polignac number, because 6620297 - 2⁴ = 6620281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6620291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293 + ... + 3650.

It is an arithmetic number, because the mean of its divisors is an integer number (875568).

Almost surely, 2^6620297 is an apocalyptic number.

It is an amenable number.

6620297 is a deficient number, since it is larger than the sum of its proper divisors (384247).

6620297 is a wasteful number, since it uses less digits than its factorization.

6620297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4039.

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

The square root of 6620297 is about 2572.9937815704. The cubic root of 6620297 is about 187.7698348965.

Adding to 6620297 its sum of digits (32), we get a square (6620329 = 2573²).

The spelling of 6620297 in words is "six million, six hundred twenty thousand, two hundred ninety-seven".