1264635077 has 2 divisors, whose sum is σ = 1264635078. Its totient is φ = 1264635076.

The previous prime is 1264635019. The next prime is 1264635091. The reversal of 1264635077 is 7705364621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1251319876 + 13315201 = 35374^2 + 3649^2 .

It is an emirp because it is prime and its reverse (7705364621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1264635077 - 2²⁰ = 1263586501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1264635377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632317538 + 632317539.

It is an arithmetic number, because the mean of its divisors is an integer number (632317539).

Almost surely, 2^1264635077 is an apocalyptic number.

It is an amenable number.

1264635077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264635077 is an equidigital number, since it uses as much as digits as its factorization.

1264635077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 1264635077 is about 35561.7080157857. The cubic root of 1264635077 is about 1081.4050861912.

Adding to 1264635077 its reverse (7705364621), we get a palindrome (8969999698).

The spelling of 1264635077 in words is "one billion, two hundred sixty-four million, six hundred thirty-five thousand, seventy-seven".