6655997 has 2 divisors, whose sum is σ = 6655998. Its totient is φ = 6655996.

The previous prime is 6655951. The next prime is 6656003. The reversal of 6655997 is 7995566.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5707321 + 948676 = 2389^2 + 974^2 .

It is a cyclic number.

It is not a de Polignac number, because 6655997 - 2¹⁶ = 6590461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6655907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3327998 + 3327999.

It is an arithmetic number, because the mean of its divisors is an integer number (3327999).

Almost surely, 2^6655997 is an apocalyptic number.

It is an amenable number.

6655997 is a deficient number, since it is larger than the sum of its proper divisors (1).

6655997 is an equidigital number, since it uses as much as digits as its factorization.

6655997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 510300, while the sum is 47.

The square root of 6655997 is about 2579.9218980427. The cubic root of 6655997 is about 188.1067467564.

The spelling of 6655997 in words is "six million, six hundred fifty-five thousand, nine hundred ninety-seven".