266869642 has 8 divisors (see below), whose sum is σ = 431097156. Its totient is φ = 123170592.

The previous prime is 266869639. The next prime is 266869661. The reversal of 266869642 is 246968662.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 265722601 + 1147041 = 16301^2 + 1071^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5132083 + ... + 5132134.

Almost surely, 2^266869642 is an apocalyptic number.

266869642 is a deficient number, since it is larger than the sum of its proper divisors (164227514).

266869642 is a wasteful number, since it uses less digits than its factorization.

266869642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10264232.

The product of its digits is 1492992, while the sum is 49.

The square root of 266869642 is about 16336.1452613522. The cubic root of 266869642 is about 643.8228570948.

The spelling of 266869642 in words is "two hundred sixty-six million, eight hundred sixty-nine thousand, six hundred forty-two".