667165072 has 20 divisors (see below), whose sum is σ = 1477294336. Its totient is φ = 285927840.

The previous prime is 667165067. The next prime is 667165087. The reversal of 667165072 is 270561766.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2978304 + ... + 2978527.

Almost surely, 2^667165072 is an apocalyptic number.

It is an amenable number.

667165072 is an abundant number, since it is smaller than the sum of its proper divisors (810129264).

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

667165072 is a wasteful number, since it uses less digits than its factorization.

667165072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5956846 (or 5956840 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 667165072 is about 25829.5387492692. The cubic root of 667165072 is about 873.7981090891.

The spelling of 667165072 in words is "six hundred sixty-seven million, one hundred sixty-five thousand, seventy-two".