788381664 has 96 divisors (see below), whose sum is σ = 2504307456. Its totient is φ = 211998720.

The previous prime is 788381663. The next prime is 788381701. The reversal of 788381664 is 466183887.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (788381663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23082 + ... + 45929.

It is an arithmetic number, because the mean of its divisors is an integer number (26086536).

Almost surely, 2^788381664 is an apocalyptic number.

It is an amenable number.

788381664 is an abundant number, since it is smaller than the sum of its proper divisors (1715925792).

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

788381664 is a wasteful number, since it uses less digits than its factorization.

788381664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69048 (or 69040 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 51.

The square root of 788381664 is about 28078.1349807996. The cubic root of 788381664 is about 923.8018727764.

The spelling of 788381664 in words is "seven hundred eighty-eight million, three hundred eighty-one thousand, six hundred sixty-four".