86674632661 has 2 divisors, whose sum is σ = 86674632662. Its totient is φ = 86674632660.

The previous prime is 86674632623. The next prime is 86674632691. The reversal of 86674632661 is 16623647668.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68505210225 + 18169422436 = 261735^2 + 134794^2 .

It is a cyclic number.

It is not a de Polignac number, because 86674632661 - 2¹¹ = 86674630613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86674632691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43337316330 + 43337316331.

It is an arithmetic number, because the mean of its divisors is an integer number (43337316331).

Almost surely, 2^86674632661 is an apocalyptic number.

It is an amenable number.

86674632661 is a deficient number, since it is larger than the sum of its proper divisors (1).

86674632661 is an equidigital number, since it uses as much as digits as its factorization.

86674632661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10450944, while the sum is 55.

The spelling of 86674632661 in words is "eighty-six billion, six hundred seventy-four million, six hundred thirty-two thousand, six hundred sixty-one".