6956581 has 2 divisors, whose sum is σ = 6956582. Its totient is φ = 6956580.

The previous prime is 6956567. The next prime is 6956597. The reversal of 6956581 is 1856596.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4691556 + 2265025 = 2166^2 + 1505^2 .

It is a cyclic number.

It is not a de Polignac number, because 6956581 - 2¹⁷ = 6825509 is a prime.

It is a super-2 number, since 2×6956581² = 96788038419122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6956531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3478290 + 3478291.

It is an arithmetic number, because the mean of its divisors is an integer number (3478291).

Almost surely, 2^6956581 is an apocalyptic number.

It is an amenable number.

6956581 is a deficient number, since it is larger than the sum of its proper divisors (1).

6956581 is an equidigital number, since it uses as much as digits as its factorization.

6956581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 40.

The square root of 6956581 is about 2637.5331277540. The cubic root of 6956581 is about 190.8967855121.

The spelling of 6956581 in words is "six million, nine hundred fifty-six thousand, five hundred eighty-one".