776341961 has 4 divisors (see below), whose sum is σ = 777651732. Its totient is φ = 775032192.

The previous prime is 776341949. The next prime is 776341963. The reversal of 776341961 is 169143677.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 683508736 + 92833225 = 26144^2 + 9635^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-776341961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (776341963) 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 3 ways as a sum of consecutive naturals, for example, 653996 + ... + 655181.

It is an arithmetic number, because the mean of its divisors is an integer number (194412933).

Almost surely, 2^776341961 is an apocalyptic number.

It is an amenable number.

776341961 is a deficient number, since it is larger than the sum of its proper divisors (1309771).

776341961 is a wasteful number, since it uses less digits than its factorization.

776341961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309770.

The product of its digits is 190512, while the sum is 44.

The square root of 776341961 is about 27862.9137205713. The cubic root of 776341961 is about 919.0751421676.

The spelling of 776341961 in words is "seven hundred seventy-six million, three hundred forty-one thousand, nine hundred sixty-one".