6218397 has 8 divisors (see below), whose sum is σ = 9212480. Its totient is φ = 4145580.

The previous prime is 6218369. The next prime is 6218417. The reversal of 6218397 is 7938126.

It is not a de Polignac number, because 6218397 - 2⁷ = 6218269 is a prime.

It is a super-2 number, since 2×6218397² = 77336922499218, which contains 22 as substring.

It is a Duffinian number.

6218397 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6218357) 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, 115129 + ... + 115182.

It is an arithmetic number, because the mean of its divisors is an integer number (1151560).

Almost surely, 2^6218397 is an apocalyptic number.

It is an amenable number.

6218397 is a deficient number, since it is larger than the sum of its proper divisors (2994083).

6218397 is a wasteful number, since it uses less digits than its factorization.

6218397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230320 (or 230314 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 6218397 is about 2493.6713897384. The cubic root of 6218397 is about 183.8905796345.

The spelling of 6218397 in words is "six million, two hundred eighteen thousand, three hundred ninety-seven".