667371952 has 40 divisors (see below), whose sum is σ = 1398677840. Its totient is φ = 306650880.

The previous prime is 667371949. The next prime is 667371959. The reversal of 667371952 is 259173766.

667371952 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (667371959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40627 + ... + 54637.

It is an arithmetic number, because the mean of its divisors is an integer number (34966946).

Almost surely, 2^667371952 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 667371952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (699338920).

667371952 is an abundant number, since it is smaller than the sum of its proper divisors (731305888).

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

667371952 is a wasteful number, since it uses less digits than its factorization.

667371952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14261 (or 14255 counting only the distinct ones).

The product of its digits is 476280, while the sum is 46.

The square root of 667371952 is about 25833.5431561371. The cubic root of 667371952 is about 873.8884179090. Note that the first 3 decimals are identical.

The spelling of 667371952 in words is "six hundred sixty-seven million, three hundred seventy-one thousand, nine hundred fifty-two".