1966393 has 8 divisors (see below), whose sum is σ = 2310336. Its totient is φ = 1650000.

The previous prime is 1966387. The next prime is 1966397. The reversal of 1966393 is 3936691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1966393 - 2¹⁷ = 1835321 is a prime.

It is a d-powerful number, because it can be written as 1 + 9 + 6⁷ + 6⁸ + 3³ + 9⁴ + 3⁵ .

It is a Duffinian number.

1966393 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1966397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6733 + ... + 7018.

It is an arithmetic number, because the mean of its divisors is an integer number (288792).

2^1966393 is an apocalyptic number.

1966393 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1966393 is a deficient number, since it is larger than the sum of its proper divisors (343943).

1966393 is a wasteful number, since it uses less digits than its factorization.

1966393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13775.

The product of its digits is 26244, while the sum is 37.

The square root of 1966393 is about 1402.2813555061. The cubic root of 1966393 is about 125.2824121332.

The spelling of 1966393 in words is "one million, nine hundred sixty-six thousand, three hundred ninety-three".