667423960 has 32 divisors (see below), whose sum is σ = 1716233760. Its totient is φ = 228830976.

The previous prime is 667423957. The next prime is 667423969. The reversal of 667423960 is 69324766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667423969) 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, 1191549 + ... + 1192108.

It is an arithmetic number, because the mean of its divisors is an integer number (53632305).

Almost surely, 2^667423960 is an apocalyptic number.

It is an amenable number.

667423960 is an abundant number, since it is smaller than the sum of its proper divisors (1048809800).

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

667423960 is a wasteful number, since it uses less digits than its factorization.

667423960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2383675 (or 2383671 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 43.

The square root of 667423960 is about 25834.5497348028. The cubic root of 667423960 is about 873.9111178982.

The spelling of 667423960 in words is "six hundred sixty-seven million, four hundred twenty-three thousand, nine hundred sixty".