266266004 has 6 divisors (see below), whose sum is σ = 465965514. Its totient is φ = 133133000.

The previous prime is 266265983. The next prime is 266266027. The reversal of 266266004 is 400662662.

It can be written as a sum of positive squares in only one way, i.e., 184905604 + 81360400 = 13598^2 + 9020^2 .

It is a super-2 number, since 2×266266004² = 141795169772256032, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33283247 + ... + 33283254.

It is an arithmetic number, because the mean of its divisors is an integer number (77660919).

Almost surely, 2^266266004 is an apocalyptic number.

It is an amenable number.

266266004 is a deficient number, since it is larger than the sum of its proper divisors (199699510).

266266004 is a wasteful number, since it uses less digits than its factorization.

266266004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66566505 (or 66566503 counting only the distinct ones).

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

The square root of 266266004 is about 16317.6592684122. The cubic root of 266266004 is about 643.3370651941.

The spelling of 266266004 in words is "two hundred sixty-six million, two hundred sixty-six thousand, four".