8662711261 has 2 divisors, whose sum is σ = 8662711262. Its totient is φ = 8662711260.

The previous prime is 8662711231. The next prime is 8662711339. The reversal of 8662711261 is 1621172668.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8316528025 + 346183236 = 91195^2 + 18606^2 .

It is a cyclic number.

It is not a de Polignac number, because 8662711261 - 2¹³ = 8662703069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8662711231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4331355630 + 4331355631.

It is an arithmetic number, because the mean of its divisors is an integer number (4331355631).

Almost surely, 2^8662711261 is an apocalyptic number.

It is an amenable number.

8662711261 is a deficient number, since it is larger than the sum of its proper divisors (1).

8662711261 is an equidigital number, since it uses as much as digits as its factorization.

8662711261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 40.

The square root of 8662711261 is about 93073.6872644466. The cubic root of 8662711261 is about 2053.7675124727.

The spelling of 8662711261 in words is "eight billion, six hundred sixty-two million, seven hundred eleven thousand, two hundred sixty-one".