1266764 has 6 divisors (see below), whose sum is σ = 2216844. Its totient is φ = 633380.

The previous prime is 1266763. The next prime is 1266767. The reversal of 1266764 is 4676621.

It is a self number, because there is not a number n which added to its sum of digits gives 1266764.

It is not an unprimeable number, because it can be changed into a prime (1266761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158342 + ... + 158349.

It is an arithmetic number, because the mean of its divisors is an integer number (369474).

2^1266764 is an apocalyptic number.

It is an amenable number.

1266764 is a deficient number, since it is larger than the sum of its proper divisors (950080).

1266764 is a wasteful number, since it uses less digits than its factorization.

1266764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316695 (or 316693 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

The square root of 1266764 is about 1125.5061083797. The cubic root of 1266764 is about 108.2011568786.

The spelling of 1266764 in words is "one million, two hundred sixty-six thousand, seven hundred sixty-four".