6618959 has 2 divisors, whose sum is σ = 6618960. Its totient is φ = 6618958.

The previous prime is 6618949. The next prime is 6618971. The reversal of 6618959 is 9598166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6618959 - 2¹² = 6614863 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6618919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3309479 + 3309480.

It is an arithmetic number, because the mean of its divisors is an integer number (3309480).

Almost surely, 2^6618959 is an apocalyptic number.

6618959 is a deficient number, since it is larger than the sum of its proper divisors (1).

6618959 is an equidigital number, since it uses as much as digits as its factorization.

6618959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 44.

The square root of 6618959 is about 2572.7337600304. The cubic root of 6618959 is about 187.7571842573.

The spelling of 6618959 in words is "six million, six hundred eighteen thousand, nine hundred fifty-nine".