6971378 has 6 divisors (see below), whose sum is σ = 10462671. Its totient is φ = 3483822.

The previous prime is 6971357. The next prime is 6971383. The reversal of 6971378 is 8731796.

It can be written as a sum of positive squares in only one way, i.e., 3485689 + 3485689 = 1867^2 + 1867^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=1867.

It is a super-2 number, since 2×6971378² = 97200222437768, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2801 + ... + 4667.

Almost surely, 2^6971378 is an apocalyptic number.

6971378 is a deficient number, since it is larger than the sum of its proper divisors (3491293).

6971378 is an frugal number, since it uses more digits than its factorization.

6971378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3736 (or 1869 counting only the distinct ones).

The product of its digits is 63504, while the sum is 41.

The square root of 6971378 is about 2640.3367209506. The cubic root of 6971378 is about 191.0320387032.

The spelling of 6971378 in words is "six million, nine hundred seventy-one thousand, three hundred seventy-eight".