772623101 has 2 divisors, whose sum is σ = 772623102. Its totient is φ = 772623100.

The previous prime is 772623091. The next prime is 772623109. The reversal of 772623101 is 101326277.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 606883225 + 165739876 = 24635^2 + 12874^2 .

It is a cyclic number.

It is not a de Polignac number, because 772623101 - 2⁶ = 772623037 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (772623109) 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, 386311550 + 386311551.

It is an arithmetic number, because the mean of its divisors is an integer number (386311551).

Almost surely, 2^772623101 is an apocalyptic number.

It is an amenable number.

772623101 is a deficient number, since it is larger than the sum of its proper divisors (1).

772623101 is an equidigital number, since it uses as much as digits as its factorization.

772623101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 772623101 is about 27796.0986651005. The cubic root of 772623101 is about 917.6052641763.

Adding to 772623101 its reverse (101326277), we get a palindrome (873949378).

The spelling of 772623101 in words is "seven hundred seventy-two million, six hundred twenty-three thousand, one hundred one".