1366670 has 16 divisors (see below), whose sum is σ = 2589840. Its totient is φ = 517824.

The previous prime is 1366667. The next prime is 1366693. The reversal of 1366670 is 766631.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3407 + ... + 3786.

It is an arithmetic number, because the mean of its divisors is an integer number (161865).

2^1366670 is an apocalyptic number.

1366670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1366670 is a deficient number, since it is larger than the sum of its proper divisors (1223170).

1366670 is a wasteful number, since it uses less digits than its factorization.

1366670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7219.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 1366670 is about 1169.0466201140. The cubic root of 1366670 is about 110.9739949361.

The spelling of 1366670 in words is "one million, three hundred sixty-six thousand, six hundred seventy".