667070540 has 24 divisors (see below), whose sum is σ = 1401333360. Its totient is φ = 266735808.

The previous prime is 667070513. The next prime is 667070543. The reversal of 667070540 is 45070766.

It is a self number, because there is not a number n which added to its sum of digits gives 667070540.

It is not an unprimeable number, because it can be changed into a prime (667070543) 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 7 ways as a sum of consecutive naturals, for example, 110726 + ... + 116594.

It is an arithmetic number, because the mean of its divisors is an integer number (58388890).

Almost surely, 2^667070540 is an apocalyptic number.

It is an amenable number.

667070540 is an abundant number, since it is smaller than the sum of its proper divisors (734262820).

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

667070540 is a wasteful number, since it uses less digits than its factorization.

667070540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11561 (or 11559 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 667070540 is about 25827.7087640387. The cubic root of 667070540 is about 873.7568370522.

The spelling of 667070540 in words is "six hundred sixty-seven million, seventy thousand, five hundred forty".