161456677 has 2 divisors, whose sum is σ = 161456678. Its totient is φ = 161456676.

The previous prime is 161456629. The next prime is 161456707. The reversal of 161456677 is 776654161.

161456677 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 155725441 + 5731236 = 12479^2 + 2394^2 .

It is a cyclic number.

It is not a de Polignac number, because 161456677 - 2¹⁵ = 161423909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161456077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80728338 + 80728339.

It is an arithmetic number, because the mean of its divisors is an integer number (80728339).

Almost surely, 2^161456677 is an apocalyptic number.

It is an amenable number.

161456677 is a deficient number, since it is larger than the sum of its proper divisors (1).

161456677 is an equidigital number, since it uses as much as digits as its factorization.

161456677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 43.

The square root of 161456677 is about 12706.5603921754. The cubic root of 161456677 is about 544.5260610564.

It can be divided in two parts, 16145 and 6677, that added together give a palindrome (22822).

The spelling of 161456677 in words is "one hundred sixty-one million, four hundred fifty-six thousand, six hundred seventy-seven".