6940000261 has 2 divisors, whose sum is σ = 6940000262. Its totient is φ = 6940000260.

The previous prime is 6940000189. The next prime is 6940000271. The reversal of 6940000261 is 1620000496.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6938057025 + 1943236 = 83295^2 + 1394^2 .

It is a cyclic number.

It is not a de Polignac number, because 6940000261 - 2¹³ = 6939992069 is a prime.

It is a super-3 number, since 3×6940000261³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6940000271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3470000130 + 3470000131.

It is an arithmetic number, because the mean of its divisors is an integer number (3470000131).

Almost surely, 2^6940000261 is an apocalyptic number.

It is an amenable number.

6940000261 is a deficient number, since it is larger than the sum of its proper divisors (1).

6940000261 is an equidigital number, since it uses as much as digits as its factorization.

6940000261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 6940000261 is about 83306.6639651355. The cubic root of 6940000261 is about 1907.4499984660.

The spelling of 6940000261 in words is "six billion, nine hundred forty million, two hundred sixty-one", and thus it is an aban number.