1264573663 has 2 divisors, whose sum is σ = 1264573664. Its totient is φ = 1264573662.

The previous prime is 1264573601. The next prime is 1264573691. The reversal of 1264573663 is 3663754621.

It is a strong prime.

It is an emirp because it is prime and its reverse (3663754621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1264573663 - 2⁹ = 1264573151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1264573463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 632286831 + 632286832.

It is an arithmetic number, because the mean of its divisors is an integer number (632286832).

Almost surely, 2^1264573663 is an apocalyptic number.

1264573663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1264573663 is an equidigital number, since it uses as much as digits as its factorization.

1264573663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 43.

The square root of 1264573663 is about 35560.8445203429. The cubic root of 1264573663 is about 1081.3875806176.

The spelling of 1264573663 in words is "one billion, two hundred sixty-four million, five hundred seventy-three thousand, six hundred sixty-three".