260142664 has 8 divisors (see below), whose sum is σ = 487767510. Its totient is φ = 130071328.

The previous prime is 260142643. The next prime is 260142677. The reversal of 260142664 is 466241062.

It can be written as a sum of positive squares in only one way, i.e., 145009764 + 115132900 = 12042^2 + 10730^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 16258909 + ... + 16258924.

Almost surely, 2^260142664 is an apocalyptic number.

It is an amenable number.

260142664 is a deficient number, since it is larger than the sum of its proper divisors (227624846).

260142664 is a wasteful number, since it uses less digits than its factorization.

260142664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32517839 (or 32517835 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 260142664 is about 16128.9387127610. The cubic root of 260142664 is about 638.3671461810.

The spelling of 260142664 in words is "two hundred sixty million, one hundred forty-two thousand, six hundred sixty-four".