6918897 has 4 divisors (see below), whose sum is σ = 9225200. Its totient is φ = 4612596.

The previous prime is 6918853. The next prime is 6918943. The reversal of 6918897 is 7988196.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6918897 - 2¹⁴ = 6902513 is a prime.

It is a super-2 number, since 2×6918897² = 95742271393218, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6918827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1153147 + ... + 1153152.

It is an arithmetic number, because the mean of its divisors is an integer number (2306300).

Almost surely, 2^6918897 is an apocalyptic number.

It is an amenable number.

6918897 is a deficient number, since it is larger than the sum of its proper divisors (2306303).

6918897 is a wasteful number, since it uses less digits than its factorization.

6918897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2306302.

The product of its digits is 217728, while the sum is 48.

The square root of 6918897 is about 2630.3796303956. The cubic root of 6918897 is about 190.5514634211.

The spelling of 6918897 in words is "six million, nine hundred eighteen thousand, eight hundred ninety-seven".