7069681 has 2 divisors, whose sum is σ = 7069682. Its totient is φ = 7069680.

The previous prime is 7069663. The next prime is 7069687. The reversal of 7069681 is 1869607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6051600 + 1018081 = 2460^2 + 1009^2 .

It is a cyclic number.

It is not a de Polignac number, because 7069681 - 2¹³ = 7061489 is a prime.

It is a super-2 number, since 2×7069681² = 99960778883522, which contains 22 as substring.

It is an Ulam number.

7069681 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 7069681.

It is not a weakly prime, because it can be changed into another prime (7069687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3534840 + 3534841.

It is an arithmetic number, because the mean of its divisors is an integer number (3534841).

Almost surely, 2^7069681 is an apocalyptic number.

It is an amenable number.

7069681 is a deficient number, since it is larger than the sum of its proper divisors (1).

7069681 is an equidigital number, since it uses as much as digits as its factorization.

7069681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 7069681 is about 2658.8871732362. The cubic root of 7069681 is about 191.9257615910.

It can be divided in two parts, 7069 and 681, that added together give a triangular number (7750 = T₁₂₄).

The spelling of 7069681 in words is "seven million, sixty-nine thousand, six hundred eighty-one".