4678069681 has 2 divisors, whose sum is σ = 4678069682. Its totient is φ = 4678069680.

The previous prime is 4678069657. The next prime is 4678069691. The reversal of 4678069681 is 1869608764.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4543973281 + 134096400 = 67409^2 + 11580^2 .

It is a cyclic number.

It is not a de Polignac number, because 4678069681 - 2¹⁷ = 4677938609 is a prime.

It is a super-2 number, since 2×4678069681² = 43768671880582883522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4678069651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2339034840 + 2339034841.

It is an arithmetic number, because the mean of its divisors is an integer number (2339034841).

Almost surely, 2^4678069681 is an apocalyptic number.

It is an amenable number.

4678069681 is a deficient number, since it is larger than the sum of its proper divisors (1).

4678069681 is an equidigital number, since it uses as much as digits as its factorization.

4678069681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3483648, while the sum is 55.

The square root of 4678069681 is about 68396.4157028714. The cubic root of 4678069681 is about 1672.4593166304.

The spelling of 4678069681 in words is "four billion, six hundred seventy-eight million, sixty-nine thousand, six hundred eighty-one".