8401667761 has 2 divisors, whose sum is σ = 8401667762. Its totient is φ = 8401667760.

The previous prime is 8401667731. The next prime is 8401667777. The reversal of 8401667761 is 1677661048.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8398622736 + 3045025 = 91644^2 + 1745^2 .

It is a cyclic number.

It is not a de Polignac number, because 8401667761 - 2⁹ = 8401667249 is a prime.

It is not a weakly prime, because it can be changed into another prime (8401667711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4200833880 + 4200833881.

It is an arithmetic number, because the mean of its divisors is an integer number (4200833881).

Almost surely, 2^8401667761 is an apocalyptic number.

It is an amenable number.

8401667761 is a deficient number, since it is larger than the sum of its proper divisors (1).

8401667761 is an equidigital number, since it uses as much as digits as its factorization.

8401667761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 8401667761 is about 91660.6118297276. The cubic root of 8401667761 is about 2032.9272369657.

The spelling of 8401667761 in words is "eight billion, four hundred one million, six hundred sixty-seven thousand, seven hundred sixty-one".