913666 has 8 divisors (see below), whose sum is σ = 1475964. Its totient is φ = 421680.

The previous prime is 913639. The next prime is 913687. The reversal of 913666 is 666319.

It can be written as a sum of positive squares in 2 ways, for example, as 863041 + 50625 = 929^2 + 225^2 .

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

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17545 + ... + 17596.

2⁹¹³⁶⁶⁶ is an apocalyptic number.

913666 is a deficient number, since it is larger than the sum of its proper divisors (562298).

913666 is a wasteful number, since it uses less digits than its factorization.

913666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35156.

The product of its digits is 5832, while the sum is 31.

The square root of 913666 is about 955.8587761798. The cubic root of 913666 is about 97.0351663331.

The spelling of 913666 in words is "nine hundred thirteen thousand, six hundred sixty-six".