772690109 has 2 divisors, whose sum is σ = 772690110. Its totient is φ = 772690108.

The previous prime is 772690033. The next prime is 772690117. The reversal of 772690109 is 901096277.

It is a happy number.

772690109 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., 772673209 + 16900 = 27797^2 + 130^2 .

It is a cyclic number.

It is not a de Polignac number, because 772690109 - 2²⁴ = 755912893 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (772690189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386345054 + 386345055.

It is an arithmetic number, because the mean of its divisors is an integer number (386345055).

Almost surely, 2^772690109 is an apocalyptic number.

It is an amenable number.

772690109 is a deficient number, since it is larger than the sum of its proper divisors (1).

772690109 is an equidigital number, since it uses as much as digits as its factorization.

772690109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47628, while the sum is 41.

The square root of 772690109 is about 27797.3039879770. The cubic root of 772690109 is about 917.6317907436.

The spelling of 772690109 in words is "seven hundred seventy-two million, six hundred ninety thousand, one hundred nine".