260666402 has 16 divisors (see below), whose sum is σ = 399322872. Its totient is φ = 127570560.

The previous prime is 260666333. The next prime is 260666407. The reversal of 260666402 is 204666062.

It can be written as a sum of positive squares in 4 ways, for example, as 253796761 + 6869641 = 15931^2 + 2621^2 .

It is not an unprimeable number, because it can be changed into a prime (260666407) 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 7 ways as a sum of consecutive naturals, for example, 45752 + ... + 51132.

Almost surely, 2^260666402 is an apocalyptic number.

260666402 is a deficient number, since it is larger than the sum of its proper divisors (138656470).

260666402 is a wasteful number, since it uses less digits than its factorization.

260666402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5893.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 260666402 is about 16145.1665212843. The cubic root of 260666402 is about 638.7952612870.

The spelling of 260666402 in words is "two hundred sixty million, six hundred sixty-six thousand, four hundred two".