681467029 has 2 divisors, whose sum is σ = 681467030. Its totient is φ = 681467028.

The previous prime is 681466993. The next prime is 681467041. The reversal of 681467029 is 920764186.

681467029 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 345588100 + 335878929 = 18590^2 + 18327^2 .

It is a cyclic number.

It is not a de Polignac number, because 681467029 - 2¹⁷ = 681335957 is a prime.

It is a super-2 number, since 2×681467029² = 928794623228173682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (681467329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340733514 + 340733515.

It is an arithmetic number, because the mean of its divisors is an integer number (340733515).

Almost surely, 2^681467029 is an apocalyptic number.

It is an amenable number.

681467029 is a deficient number, since it is larger than the sum of its proper divisors (1).

681467029 is an equidigital number, since it uses as much as digits as its factorization.

681467029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 681467029 is about 26104.9234628259. The cubic root of 681467029 is about 879.9978602737.

The spelling of 681467029 in words is "six hundred eighty-one million, four hundred sixty-seven thousand, twenty-nine".