770766161 has 4 divisors (see below), whose sum is σ = 840835824. Its totient is φ = 700696500.

The previous prime is 770766149. The next prime is 770766167. The reversal of 770766161 is 161667077.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-770766161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (770766167) 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, 35034815 + ... + 35034836.

It is an arithmetic number, because the mean of its divisors is an integer number (210208956).

Almost surely, 2^770766161 is an apocalyptic number.

It is an amenable number.

770766161 is a deficient number, since it is larger than the sum of its proper divisors (70069663).

770766161 is a wasteful number, since it uses less digits than its factorization.

770766161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70069662.

The product of its (nonzero) digits is 74088, while the sum is 41.

The square root of 770766161 is about 27762.6756815693. The cubic root of 770766161 is about 916.8695432981.

The spelling of 770766161 in words is "seven hundred seventy million, seven hundred sixty-six thousand, one hundred sixty-one".