776164069 has 2 divisors, whose sum is σ = 776164070. Its totient is φ = 776164068.

The previous prime is 776164031. The next prime is 776164073. The reversal of 776164069 is 960461677.

776164069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 498941569 + 277222500 = 22337^2 + 16650^2 .

It is a cyclic number.

It is not a de Polignac number, because 776164069 - 2²³ = 767775461 is a prime.

It is a super-2 number, since 2×776164069² = 1204861324013273522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (776164099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 388082034 + 388082035.

It is an arithmetic number, because the mean of its divisors is an integer number (388082035).

Almost surely, 2^776164069 is an apocalyptic number.

It is an amenable number.

776164069 is a deficient number, since it is larger than the sum of its proper divisors (1).

776164069 is an equidigital number, since it uses as much as digits as its factorization.

776164069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 776164069 is about 27859.7212656552. The cubic root of 776164069 is about 919.0049374499.

The spelling of 776164069 in words is "seven hundred seventy-six million, one hundred sixty-four thousand, sixty-nine".