143666906 has 8 divisors (see below), whose sum is σ = 216320544. Its totient is φ = 71560060.

The previous prime is 143666869. The next prime is 143666917. The reversal of 143666906 is 609666341.

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

It is a super-2 number, since 2×143666906² = 41280359759225672, which contains 22 as substring.

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, 136040 + ... + 137091.

It is an arithmetic number, because the mean of its divisors is an integer number (27040068).

Almost surely, 2^143666906 is an apocalyptic number.

143666906 is a deficient number, since it is larger than the sum of its proper divisors (72653638).

143666906 is a wasteful number, since it uses less digits than its factorization.

143666906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273396.

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 143666906 is about 11986.1130480235. The cubic root of 143666906 is about 523.7438218086.

The spelling of 143666906 in words is "one hundred forty-three million, six hundred sixty-six thousand, nine hundred six".