793666 has 4 divisors (see below), whose sum is σ = 1190502. Its totient is φ = 396832.

The previous prime is 793633. The next prime is 793669. The reversal of 793666 is 666397.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 666397 = 131 ⋅5087.

It can be written as a sum of positive squares in only one way, i.e., 772641 + 21025 = 879^2 + 145^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (793669) 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 as a sum of consecutive naturals, namely, 198415 + ... + 198418.

2⁷⁹³⁶⁶⁶ is an apocalyptic number.

793666 is a deficient number, since it is larger than the sum of its proper divisors (396836).

793666 is a wasteful number, since it uses less digits than its factorization.

793666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396835.

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

The square root of 793666 is about 890.8793408762. The cubic root of 793666 is about 92.5861286905.

It can be divided in two parts, 7936 and 66, that multiplied together give a triangular number (523776 = T₁₀₂₃).

The spelling of 793666 in words is "seven hundred ninety-three thousand, six hundred sixty-six".