144868664 has 16 divisors (see below), whose sum is σ = 277408800. Its totient is φ = 70892992.

The previous prime is 144868639. The next prime is 144868681. The reversal of 144868664 is 466868441.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

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, 192269 + ... + 193020.

It is an arithmetic number, because the mean of its divisors is an integer number (17338050).

Almost surely, 2^144868664 is an apocalyptic number.

It is an amenable number.

144868664 is a deficient number, since it is larger than the sum of its proper divisors (132540136).

144868664 is a wasteful number, since it uses less digits than its factorization.

144868664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385342 (or 385338 counting only the distinct ones).

The product of its digits is 884736, while the sum is 47.

The square root of 144868664 is about 12036.1399127793. The cubic root of 144868664 is about 525.2001220439.

The spelling of 144868664 in words is "one hundred forty-four million, eight hundred sixty-eight thousand, six hundred sixty-four".