137143666 has 8 divisors (see below), whose sum is σ = 224416944. Its totient is φ = 62338020.

The previous prime is 137143661. The next prime is 137143667. The reversal of 137143666 is 666341731.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (137143661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3116880 + ... + 3116923.

It is an arithmetic number, because the mean of its divisors is an integer number (28052118).

Almost surely, 2^137143666 is an apocalyptic number.

137143666 is a deficient number, since it is larger than the sum of its proper divisors (87273278).

137143666 is a wasteful number, since it uses less digits than its factorization.

137143666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6233816.

The product of its digits is 54432, while the sum is 37.

The square root of 137143666 is about 11710.8354099953. The cubic root of 137143666 is about 515.6938095914.

The spelling of 137143666 in words is "one hundred thirty-seven million, one hundred forty-three thousand, six hundred sixty-six".