1266200604 has 36 divisors (see below), whose sum is σ = 3221074584. Its totient is φ = 419376672.

The previous prime is 1266200561. The next prime is 1266200627. The reversal of 1266200604 is 4060026621.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106362 + ... + 117665.

It is an arithmetic number, because the mean of its divisors is an integer number (89474294).

Almost surely, 2^1266200604 is an apocalyptic number.

It is an amenable number.

1266200604 is an abundant number, since it is smaller than the sum of its proper divisors (1954873980).

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

1266200604 is a wasteful number, since it uses less digits than its factorization.

1266200604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224194 (or 224189 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1266200604 is about 35583.7126224906. The cubic root of 1266200604 is about 1081.8511360122.

The spelling of 1266200604 in words is "one billion, two hundred sixty-six million, two hundred thousand, six hundred four".