667061304 has 96 divisors (see below), whose sum is σ = 2089195920. Its totient is φ = 175924224.

The previous prime is 667061303. The next prime is 667061323. The reversal of 667061304 is 403160766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667061303) 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 23 ways as a sum of consecutive naturals, for example, 6529 + ... + 37104.

Almost surely, 2^667061304 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 667061304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1044597960).

667061304 is an abundant number, since it is smaller than the sum of its proper divisors (1422134616).

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

667061304 is a wasteful number, since it uses less digits than its factorization.

667061304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43669 (or 43658 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 667061304 is about 25827.5299632001. The cubic root of 667061304 is about 873.7528044675.

The spelling of 667061304 in words is "six hundred sixty-seven million, sixty-one thousand, three hundred four".