667774360 has 64 divisors (see below), whose sum is σ = 1659916800. Its totient is φ = 239740800.

The previous prime is 667774351. The next prime is 667774411. The reversal of 667774360 is 63477766.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 667774360.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25155 + ... + 44365.

It is an arithmetic number, because the mean of its divisors is an integer number (25936200).

Almost surely, 2^667774360 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 667774360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (829958400).

667774360 is an abundant number, since it is smaller than the sum of its proper divisors (992142440).

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

667774360 is a wasteful number, since it uses less digits than its factorization.

667774360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19312 (or 19308 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 46.

The square root of 667774360 is about 25841.3304611044. The cubic root of 667774360 is about 874.0640266444.

The spelling of 667774360 in words is "six hundred sixty-seven million, seven hundred seventy-four thousand, three hundred sixty".