6959881 has 2 divisors, whose sum is σ = 6959882. Its totient is φ = 6959880.

The previous prime is 6959867. The next prime is 6959891. The reversal of 6959881 is 1889596.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6864400 + 95481 = 2620^2 + 309^2 .

It is a cyclic number.

It is not a de Polignac number, because 6959881 - 2⁷ = 6959753 is a prime.

It is a super-2 number, since 2×6959881² = 96879887068322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6959831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3479940 + 3479941.

It is an arithmetic number, because the mean of its divisors is an integer number (3479941).

Almost surely, 2^6959881 is an apocalyptic number.

It is an amenable number.

6959881 is a deficient number, since it is larger than the sum of its proper divisors (1).

6959881 is an equidigital number, since it uses as much as digits as its factorization.

6959881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 46.

The square root of 6959881 is about 2638.1586381414. The cubic root of 6959881 is about 190.9269660374.

The spelling of 6959881 in words is "six million, nine hundred fifty-nine thousand, eight hundred eighty-one".