143646664 has 32 divisors (see below), whose sum is σ = 314369280. Its totient is φ = 60251904.

The previous prime is 143646649. The next prime is 143646667. The reversal of 143646664 is 466646341.

It is not an unprimeable number, because it can be changed into a prime (143646667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24657 + ... + 29920.

It is an arithmetic number, because the mean of its divisors is an integer number (9824040).

Almost surely, 2^143646664 is an apocalyptic number.

143646664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

143646664 is an abundant number, since it is smaller than the sum of its proper divisors (170722616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143646664 is a wasteful number, since it uses less digits than its factorization.

143646664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54637 (or 54633 counting only the distinct ones).

The product of its digits is 248832, while the sum is 40.

The square root of 143646664 is about 11985.2686244406. The cubic root of 143646664 is about 523.7192229624.

The spelling of 143646664 in words is "one hundred forty-three million, six hundred forty-six thousand, six hundred sixty-four".