1264795567 has 32 divisors (see below), whose sum is σ = 1527644160. Its totient is φ = 1024414560.

The previous prime is 1264795559. The next prime is 1264795603. The reversal of 1264795567 is 7655974621.

It is a cyclic number.

It is not a de Polignac number, because 1264795567 - 2³ = 1264795559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1264798567) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2854848 + ... + 2855290.

It is an arithmetic number, because the mean of its divisors is an integer number (47738880).

Almost surely, 2^1264795567 is an apocalyptic number.

1264795567 is a deficient number, since it is larger than the sum of its proper divisors (262848593).

1264795567 is a wasteful number, since it uses less digits than its factorization.

1264795567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763.

The product of its digits is 3175200, while the sum is 52.

The square root of 1264795567 is about 35563.9644443642. The cubic root of 1264795567 is about 1081.4508299171.

The spelling of 1264795567 in words is "one billion, two hundred sixty-four million, seven hundred ninety-five thousand, five hundred sixty-seven".