1260664564 has 24 divisors (see below), whose sum is σ = 2258676000. Its totient is φ = 615472800.

The previous prime is 1260664553. The next prime is 1260664567. The reversal of 1260664564 is 4654660621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1260664567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17239 + ... + 53089.

It is an arithmetic number, because the mean of its divisors is an integer number (94111500).

Almost surely, 2^1260664564 is an apocalyptic number.

It is an amenable number.

1260664564 is a deficient number, since it is larger than the sum of its proper divisors (998011436).

1260664564 is a wasteful number, since it uses less digits than its factorization.

1260664564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36063 (or 36061 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 1260664564 is about 35505.8384494719. The cubic root of 1260664564 is about 1080.2721547779.

The spelling of 1260664564 in words is "one billion, two hundred sixty million, six hundred sixty-four thousand, five hundred sixty-four".