667066968 has 64 divisors (see below), whose sum is σ = 1859820000. Its totient is φ = 221533056.

The previous prime is 667066937. The next prime is 667066973. The reversal of 667066968 is 869660766.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 54258 + ... + 65406.

Almost surely, 2^667066968 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 667066968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (929910000).

667066968 is an abundant number, since it is smaller than the sum of its proper divisors (1192753032).

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

667066968 is a wasteful number, since it uses less digits than its factorization.

667066968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11441 (or 11431 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The square root of 667066968 is about 25827.6396134064. The cubic root of 667066968 is about 873.7552774645.

The spelling of 667066968 in words is "six hundred sixty-seven million, sixty-six thousand, nine hundred sixty-eight".