1264604817 has 16 divisors (see below), whose sum is σ = 1929277440. Its totient is φ = 721783632.

The previous prime is 1264604807. The next prime is 1264604863. The reversal of 1264604817 is 7184064621.

It is not a de Polignac number, because 1264604817 - 2¹⁰ = 1264603793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1264604807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16767 + ... + 53012.

It is an arithmetic number, because the mean of its divisors is an integer number (120579840).

Almost surely, 2^1264604817 is an apocalyptic number.

It is an amenable number.

1264604817 is a deficient number, since it is larger than the sum of its proper divisors (664672623).

1264604817 is an equidigital number, since it uses as much as digits as its factorization.

1264604817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70652.

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 1264604817 is about 35561.2825556110. The cubic root of 1264604817 is about 1081.3964608891.

The spelling of 1264604817 in words is "one billion, two hundred sixty-four million, six hundred four thousand, eight hundred seventeen".