666793 has 8 divisors (see below), whose sum is σ = 710208. Its totient is φ = 624624.

The previous prime is 666773. The next prime is 666811. The reversal of 666793 is 397666.

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

It is a cyclic number.

It is not a de Polignac number, because 666793 - 2¹³ = 658601 is a prime.

It is a super-2 number, since 2×666793² = 889225809698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666733) 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, 946 + ... + 1492.

It is an arithmetic number, because the mean of its divisors is an integer number (88776).

666793 is a Friedman number, since it can be written as 6/6+9*(7*6)^3, using all its digits and the basic arithmetic operations.

2⁶⁶⁶⁷⁹³ is an apocalyptic number.

It is an amenable number.

666793 is a deficient number, since it is larger than the sum of its proper divisors (43415).

666793 is a wasteful number, since it uses less digits than its factorization.

666793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623.

The product of its digits is 40824, while the sum is 37.

The square root of 666793 is about 816.5739403140. The cubic root of 666793 is about 87.3635642417.

It can be divided in two parts, 66 and 6793, that added together give a cube (6859 = 19³).

The spelling of 666793 in words is "six hundred sixty-six thousand, seven hundred ninety-three".