61077089 has 2 divisors, whose sum is σ = 61077090. Its totient is φ = 61077088.

The previous prime is 61077083. The next prime is 61077091. The reversal of 61077089 is 98077016.

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., 60964864 + 112225 = 7808^2 + 335^2 .

It is a cyclic number.

It is not a de Polignac number, because 61077089 - 2⁸ = 61076833 is a prime.

Together with 61077091, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61077083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30538544 + 30538545.

It is an arithmetic number, because the mean of its divisors is an integer number (30538545).

Almost surely, 2^61077089 is an apocalyptic number.

It is an amenable number.

61077089 is a deficient number, since it is larger than the sum of its proper divisors (1).

61077089 is an equidigital number, since it uses as much as digits as its factorization.

61077089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 61077089 is about 7815.1832352159. The cubic root of 61077089 is about 393.8154739866.

The spelling of 61077089 in words is "sixty-one million, seventy-seven thousand, eighty-nine".