676623161 has 2 divisors, whose sum is σ = 676623162. Its totient is φ = 676623160.

The previous prime is 676623109. The next prime is 676623173. The reversal of 676623161 is 161326676.

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., 371911225 + 304711936 = 19285^2 + 17456^2 .

It is a cyclic number.

It is not a de Polignac number, because 676623161 - 2⁶ = 676623097 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (676622161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338311580 + 338311581.

It is an arithmetic number, because the mean of its divisors is an integer number (338311581).

Almost surely, 2^676623161 is an apocalyptic number.

It is an amenable number.

676623161 is a deficient number, since it is larger than the sum of its proper divisors (1).

676623161 is an equidigital number, since it uses as much as digits as its factorization.

676623161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 38.

The square root of 676623161 is about 26011.9811048678. The cubic root of 676623161 is about 877.9078921750.

The spelling of 676623161 in words is "six hundred seventy-six million, six hundred twenty-three thousand, one hundred sixty-one".