268665602 has 4 divisors (see below), whose sum is σ = 402998406. Its totient is φ = 134332800.

The previous prime is 268665601. The next prime is 268665611. The reversal of 268665602 is 206566862.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 246207481 + 22458121 = 15691^2 + 4739^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 268665602.

It is not an unprimeable number, because it can be changed into a prime (268665601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67166399 + ... + 67166402.

Almost surely, 2^268665602 is an apocalyptic number.

268665602 is a deficient number, since it is larger than the sum of its proper divisors (134332804).

268665602 is a wasteful number, since it uses less digits than its factorization.

268665602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134332803.

The product of its (nonzero) digits is 207360, while the sum is 41.

The square root of 268665602 is about 16391.0219937623. The cubic root of 268665602 is about 645.2638801693.

The spelling of 268665602 in words is "two hundred sixty-eight million, six hundred sixty-five thousand, six hundred two".