667274140 has 48 divisors (see below), whose sum is σ = 1597845312. Its totient is φ = 231883776.

The previous prime is 667274107. The next prime is 667274143. The reversal of 667274140 is 41472766.

It is a self number, because there is not a number n which added to its sum of digits gives 667274140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667274143) by changing a digit.

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, 71064 + ... + 79903.

It is an arithmetic number, because the mean of its divisors is an integer number (33288444).

Almost surely, 2^667274140 is an apocalyptic number.

It is an amenable number.

667274140 is an abundant number, since it is smaller than the sum of its proper divisors (930571172).

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

667274140 is a wasteful number, since it uses less digits than its factorization.

667274140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151006 (or 151004 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 667274140 is about 25831.6499666591. The cubic root of 667274140 is about 873.8457226025.

The spelling of 667274140 in words is "six hundred sixty-seven million, two hundred seventy-four thousand, one hundred forty".