777161 has 8 divisors (see below), whose sum is σ = 969024. Its totient is φ = 605520.

The previous prime is 777151. The next prime is 777167. The reversal of 777161 is 161777.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 777161 - 2⁶ = 777097 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 777161.

It is not an unprimeable number, because it can be changed into a prime (777167) 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 in 7 ways as a sum of consecutive naturals, for example, 4970 + ... + 5123.

It is an arithmetic number, because the mean of its divisors is an integer number (121128).

2⁷⁷⁷¹⁶¹ is an apocalyptic number.

It is an amenable number.

777161 is a deficient number, since it is larger than the sum of its proper divisors (191863).

777161 is a wasteful number, since it uses less digits than its factorization.

777161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10111.

The product of its digits is 2058, while the sum is 29.

The square root of 777161 is about 881.5673542050. The cubic root of 777161 is about 91.9398235967.

The spelling of 777161 in words is "seven hundred seventy-seven thousand, one hundred sixty-one".