8661049 has 2 divisors, whose sum is σ = 8661050. Its totient is φ = 8661048.

The previous prime is 8661047. The next prime is 8661061. The reversal of 8661049 is 9401668.

8661049 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8369449 + 291600 = 2893^2 + 540^2 .

It is a cyclic number.

It is not a de Polignac number, because 8661049 - 2¹ = 8661047 is a prime.

Together with 8661047, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8661043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4330524 + 4330525.

It is an arithmetic number, because the mean of its divisors is an integer number (4330525).

Almost surely, 2^8661049 is an apocalyptic number.

It is an amenable number.

8661049 is a deficient number, since it is larger than the sum of its proper divisors (1).

8661049 is an equidigital number, since it uses as much as digits as its factorization.

8661049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 8661049 is about 2942.9660208708. The cubic root of 8661049 is about 205.3636140361.

The spelling of 8661049 in words is "eight million, six hundred sixty-one thousand, forty-nine".