667723376 has 40 divisors (see below), whose sum is σ = 1371006000. Its totient is φ = 314478080.

The previous prime is 667723369. The next prime is 667723379. The reversal of 667723376 is 673327766.

667723376 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 667723376.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667723379) 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, 1475 + ... + 36573.

It is an arithmetic number, because the mean of its divisors is an integer number (34275150).

Almost surely, 2^667723376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667723376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (685503000).

667723376 is an abundant number, since it is smaller than the sum of its proper divisors (703282624).

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

667723376 is a wasteful number, since it uses less digits than its factorization.

667723376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35177 (or 35171 counting only the distinct ones).

The product of its digits is 1333584, while the sum is 47.

The square root of 667723376 is about 25840.3439605590. The cubic root of 667723376 is about 874.0417813985.

The spelling of 667723376 in words is "six hundred sixty-seven million, seven hundred twenty-three thousand, three hundred seventy-six".