149666 has 8 divisors (see below), whose sum is σ = 244944. Its totient is φ = 68020.

The previous prime is 149629. The next prime is 149689. The reversal of 149666 is 666941.

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

It is a Curzon 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, 3380 + ... + 3423.

It is an arithmetic number, because the mean of its divisors is an integer number (30618).

2¹⁴⁹⁶⁶⁶ is an apocalyptic number.

149666 is a deficient number, since it is larger than the sum of its proper divisors (95278).

149666 is a wasteful number, since it uses less digits than its factorization.

149666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6816.

The product of its digits is 7776, while the sum is 32.

The square root of 149666 is about 386.8669021770. The cubic root of 149666 is about 53.0934627120.

The spelling of 149666 in words is "one hundred forty-nine thousand, six hundred sixty-six".