655144664 has 16 divisors (see below), whose sum is σ = 1242199800. Its totient is φ = 323891392.

The previous prime is 655144663. The next prime is 655144667. The reversal of 655144664 is 466441556.

655144664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655144663) 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, 459362 + ... + 460785.

Almost surely, 2^655144664 is an apocalyptic number.

It is an amenable number.

655144664 is a deficient number, since it is larger than the sum of its proper divisors (587055136).

655144664 is a wasteful number, since it uses less digits than its factorization.

655144664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920242 (or 920238 counting only the distinct ones).

The product of its digits is 345600, while the sum is 41.

The square root of 655144664 is about 25595.7938732128. The cubic root of 655144664 is about 868.5184914994.

It can be divided in two parts, 6551 and 44664, that added together give a palindrome (51215).

The spelling of 655144664 in words is "six hundred fifty-five million, one hundred forty-four thousand, six hundred sixty-four".