6418397 has 2 divisors, whose sum is σ = 6418398. Its totient is φ = 6418396.

The previous prime is 6418387. The next prime is 6418417. The reversal of 6418397 is 7938146.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3632836 + 2785561 = 1906^2 + 1669^2 .

It is a cyclic number.

It is not a de Polignac number, because 6418397 - 2⁴ = 6418381 is a prime.

It is a super-3 number, since 3×6418397³ (a number of 21 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6418397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6418327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3209198 + 3209199.

It is an arithmetic number, because the mean of its divisors is an integer number (3209199).

Almost surely, 2^6418397 is an apocalyptic number.

It is an amenable number.

6418397 is a deficient number, since it is larger than the sum of its proper divisors (1).

6418397 is an equidigital number, since it uses as much as digits as its factorization.

6418397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 38.

The square root of 6418397 is about 2533.4555452978. The cubic root of 6418397 is about 185.8412817199.

The spelling of 6418397 in words is "six million, four hundred eighteen thousand, three hundred ninety-seven".