6978697 has 8 divisors (see below), whose sum is σ = 7742880. Its totient is φ = 6236160.

The previous prime is 6978677. The next prime is 6978703. The reversal of 6978697 is 7968796.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6978697 - 2¹⁵ = 6945929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6978617) 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, 4728 + ... + 6025.

It is an arithmetic number, because the mean of its divisors is an integer number (967860).

Almost surely, 2^6978697 is an apocalyptic number.

It is an amenable number.

6978697 is a deficient number, since it is larger than the sum of its proper divisors (764183).

6978697 is a wasteful number, since it uses less digits than its factorization.

6978697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10823.

The product of its digits is 1143072, while the sum is 52.

The square root of 6978697 is about 2641.7223548284. The cubic root of 6978697 is about 191.0988678859.

Subtracting 6978697 from its reverse (7968796), we obtain a palindrome (990099).

The spelling of 6978697 in words is "six million, nine hundred seventy-eight thousand, six hundred ninety-seven".