143688169 has 3 divisors (see below), whose sum is σ = 143700157. Its totient is φ = 143676182.

The previous prime is 143688161. The next prime is 143688173. The reversal of 143688169 is 961886341.

The square root of 143688169 is 11987.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 143688169 - 2³ = 143688161 is a prime.

It is a super-2 number, since 2×143688169² = 41292579821145122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (143688161) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 5994 + ... + 17980.

Almost surely, 2^143688169 is an apocalyptic number.

143688169 is the 11987-th square number.

143688169 is the 5994-th centered octagonal number.

It is an amenable number.

143688169 is a deficient number, since it is larger than the sum of its proper divisors (11988).

143688169 is an frugal number, since it uses more digits than its factorization.

143688169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23974 (or 11987 counting only the distinct ones).

The product of its digits is 248832, while the sum is 46.

The cubic root of 143688169 is about 523.7696589245.

The spelling of 143688169 in words is "one hundred forty-three million, six hundred eighty-eight thousand, one hundred sixty-nine".