1266004 has 6 divisors (see below), whose sum is σ = 2215514. Its totient is φ = 633000.

The previous prime is 1265993. The next prime is 1266019. The reversal of 1266004 is 4006621.

It can be written as a sum of positive squares in only one way, i.e., 1144900 + 121104 = 1070^2 + 348^2 .

It is a super-2 number, since 2×1266004² = 3205532256032, 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, 158247 + ... + 158254.

2^1266004 is an apocalyptic number.

It is an amenable number.

1266004 is a deficient number, since it is larger than the sum of its proper divisors (949510).

1266004 is a wasteful number, since it uses less digits than its factorization.

1266004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316505 (or 316503 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1266004 is about 1125.1684318359. The cubic root of 1266004 is about 108.1795139811.

The spelling of 1266004 in words is "one million, two hundred sixty-six thousand, four".