777346961 has 2 divisors, whose sum is σ = 777346962. Its totient is φ = 777346960.

The previous prime is 777346951. The next prime is 777346967. The reversal of 777346961 is 169643777.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 711022225 + 66324736 = 26665^2 + 8144^2 .

It is a cyclic number.

It is not a de Polignac number, because 777346961 - 2²² = 773152657 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (777346967) 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 as a sum of consecutive naturals, namely, 388673480 + 388673481.

It is an arithmetic number, because the mean of its divisors is an integer number (388673481).

Almost surely, 2^777346961 is an apocalyptic number.

It is an amenable number.

777346961 is a deficient number, since it is larger than the sum of its proper divisors (1).

777346961 is an equidigital number, since it uses as much as digits as its factorization.

777346961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1333584, while the sum is 50.

The square root of 777346961 is about 27880.9426131901. The cubic root of 777346961 is about 919.4715620774.

The spelling of 777346961 in words is "seven hundred seventy-seven million, three hundred forty-six thousand, nine hundred sixty-one".