667556382 has 16 divisors (see below), whose sum is σ = 1335376512. Its totient is φ = 222474840.

The previous prime is 667556377. The next prime is 667556389. The reversal of 667556382 is 283655766.

667556382 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 (667556389) 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, 40407 + ... + 54477.

It is an arithmetic number, because the mean of its divisors is an integer number (83461032).

Almost surely, 2^667556382 is an apocalyptic number.

667556382 is an abundant number, since it is smaller than the sum of its proper divisors (667820130).

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

667556382 is a wasteful number, since it uses less digits than its factorization.

667556382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21983.

The product of its digits is 1814400, while the sum is 48.

The square root of 667556382 is about 25837.1124934657. The cubic root of 667556382 is about 873.9689109514.

It can be divided in two parts, 66755 and 6382, that added together give a palindrome (73137).

The spelling of 667556382 in words is "six hundred sixty-seven million, five hundred fifty-six thousand, three hundred eighty-two".