1249666 has 16 divisors (see below), whose sum is σ = 2094048. Its totient is φ = 554400.

The previous prime is 1249657. The next prime is 1249669. The reversal of 1249666 is 6669421.

It is a super-2 number, since 2×1249666² = 3123330223112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1249669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286 + ... + 1606.

It is an arithmetic number, because the mean of its divisors is an integer number (130878).

2^1249666 is an apocalyptic number.

1249666 is a deficient number, since it is larger than the sum of its proper divisors (844382).

1249666 is a wasteful number, since it uses less digits than its factorization.

1249666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377.

The product of its digits is 15552, while the sum is 34.

The square root of 1249666 is about 1117.8846094298. The cubic root of 1249666 is about 107.7121392311.

The spelling of 1249666 in words is "one million, two hundred forty-nine thousand, six hundred sixty-six".