371666 has 4 divisors (see below), whose sum is σ = 557502. Its totient is φ = 185832.

The previous prime is 371663. The next prime is 371669. The reversal of 371666 is 666173.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (371663) and next prime (371669).

It can be written as a sum of positive squares in only one way, i.e., 319225 + 52441 = 565^2 + 229^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (371663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 92915 + ... + 92918.

2³⁷¹⁶⁶⁶ is an apocalyptic number.

371666 is a deficient number, since it is larger than the sum of its proper divisors (185836).

371666 is a wasteful number, since it uses less digits than its factorization.

371666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185835.

The product of its digits is 4536, while the sum is 29.

The square root of 371666 is about 609.6441585056. The cubic root of 371666 is about 71.8981326927.

The spelling of 371666 in words is "three hundred seventy-one thousand, six hundred sixty-six".