387255664 has 20 divisors (see below), whose sum is σ = 751054360. Its totient is φ = 193435200.

The previous prime is 387255637. The next prime is 387255667. The reversal of 387255664 is 466552783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (387255667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5302 + ... + 28330.

It is an arithmetic number, because the mean of its divisors is an integer number (37552718).

Almost surely, 2^387255664 is an apocalyptic number.

It is an amenable number.

387255664 is a deficient number, since it is larger than the sum of its proper divisors (363798696).

387255664 is a wasteful number, since it uses less digits than its factorization.

387255664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24088 (or 24082 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 46.

The square root of 387255664 is about 19678.8125658028. The cubic root of 387255664 is about 728.8966028966.

It can be divided in two parts, 3872 and 55664, that added together give a square (59536 = 244²).

The spelling of 387255664 in words is "three hundred eighty-seven million, two hundred fifty-five thousand, six hundred sixty-four".