667431412 has 6 divisors (see below), whose sum is σ = 1168004978. Its totient is φ = 333715704.

The previous prime is 667431409. The next prime is 667431461. The reversal of 667431412 is 214134766.

667431412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 556676836 + 110754576 = 23594^2 + 10524^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83428923 + ... + 83428930.

Almost surely, 2^667431412 is an apocalyptic number.

It is an amenable number.

667431412 is a deficient number, since it is larger than the sum of its proper divisors (500573566).

667431412 is a wasteful number, since it uses less digits than its factorization.

667431412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166857857 (or 166857855 counting only the distinct ones).

The product of its digits is 24192, while the sum is 34.

The square root of 667431412 is about 25834.6939598672. The cubic root of 667431412 is about 873.9143703843.

The spelling of 667431412 in words is "six hundred sixty-seven million, four hundred thirty-one thousand, four hundred twelve".