1264005716 has 18 divisors (see below), whose sum is σ = 2288979630. Its totient is φ = 610024800.

The previous prime is 1264005707. The next prime is 1264005763. The reversal of 1264005716 is 6175004621.

It can be written as a sum of positive squares in 3 ways, for example, as 10562500 + 1253443216 = 3250^2 + 35404^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 381266 + ... + 384566.

It is an arithmetic number, because the mean of its divisors is an integer number (127165535).

Almost surely, 2^1264005716 is an apocalyptic number.

It is an amenable number.

1264005716 is a deficient number, since it is larger than the sum of its proper divisors (1024973914).

1264005716 is an frugal number, since it uses more digits than its factorization.

1264005716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6635 (or 3332 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 1264005716 is about 35552.8580567020. The cubic root of 1264005716 is about 1081.2256649674.

The spelling of 1264005716 in words is "one billion, two hundred sixty-four million, five thousand, seven hundred sixteen".