766163161 has 4 divisors (see below), whose sum is σ = 768371472. Its totient is φ = 763954852.

The previous prime is 766163149. The next prime is 766163173. The reversal of 766163161 is 161361667.

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, and also an emirpimes, since its reverse is a distinct semiprime: 161361667 = 8647 ⋅18661.

It is an interprime number because it is at equal distance from previous prime (766163149) and next prime (766163173).

It is a cyclic number.

It is not a de Polignac number, because 766163161 - 2¹¹ = 766161113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 766163161.

It is not an unprimeable number, because it can be changed into a prime (766163561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1103635 + ... + 1104328.

It is an arithmetic number, because the mean of its divisors is an integer number (192092868).

Almost surely, 2^766163161 is an apocalyptic number.

It is an amenable number.

766163161 is a deficient number, since it is larger than the sum of its proper divisors (2208311).

766163161 is a wasteful number, since it uses less digits than its factorization.

766163161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2208310.

The product of its digits is 27216, while the sum is 37.

The square root of 766163161 is about 27679.6524725293. The cubic root of 766163161 is about 915.0407224055.

The spelling of 766163161 in words is "seven hundred sixty-six million, one hundred sixty-three thousand, one hundred sixty-one".