266004860 has 24 divisors (see below), whose sum is σ = 609393456. Its totient is φ = 96728960.

The previous prime is 266004841. The next prime is 266004887. The reversal of 266004860 is 68400662.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 604337 + ... + 604776.

It is an arithmetic number, because the mean of its divisors is an integer number (25391394).

Almost surely, 2^266004860 is an apocalyptic number.

266004860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266004860 is an abundant number, since it is smaller than the sum of its proper divisors (343388596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266004860 is a wasteful number, since it uses less digits than its factorization.

266004860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209133 (or 1209131 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 266004860 is about 16309.6554224790. The cubic root of 266004860 is about 643.1266758768.

The spelling of 266004860 in words is "two hundred sixty-six million, four thousand, eight hundred sixty".