677040161 has 4 divisors (see below), whose sum is σ = 773760192. Its totient is φ = 580320132.

The previous prime is 677040157. The next prime is 677040187. The reversal of 677040161 is 161040776.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 677040161 - 2² = 677040157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (677040101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48360005 + ... + 48360018.

It is an arithmetic number, because the mean of its divisors is an integer number (193440048).

Almost surely, 2^677040161 is an apocalyptic number.

It is an amenable number.

677040161 is a deficient number, since it is larger than the sum of its proper divisors (96720031).

677040161 is an equidigital number, since it uses as much as digits as its factorization.

677040161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96720030.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 677040161 is about 26019.9954073785. The cubic root of 677040161 is about 878.0882054482.

The spelling of 677040161 in words is "six hundred seventy-seven million, forty thousand, one hundred sixty-one".