161007677 has 2 divisors, whose sum is σ = 161007678. Its totient is φ = 161007676.

The previous prime is 161007667. The next prime is 161007689. The reversal of 161007677 is 776700161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148376761 + 12630916 = 12181^2 + 3554^2 .

It is an emirp because it is prime and its reverse (776700161) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161007677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161007607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80503838 + 80503839.

It is an arithmetic number, because the mean of its divisors is an integer number (80503839).

Almost surely, 2^161007677 is an apocalyptic number.

It is an amenable number.

161007677 is a deficient number, since it is larger than the sum of its proper divisors (1).

161007677 is an equidigital number, since it uses as much as digits as its factorization.

161007677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12348, while the sum is 35.

The square root of 161007677 is about 12688.8800530228. The cubic root of 161007677 is about 544.0208291567.

The spelling of 161007677 in words is "one hundred sixty-one million, seven thousand, six hundred seventy-seven".