667447412 has 24 divisors (see below), whose sum is σ = 1228802400. Its totient is φ = 316751456.

The previous prime is 667447411. The next prime is 667447427. The reversal of 667447412 is 214744766.

It is a self number, because there is not a number n which added to its sum of digits gives 667447412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667447411) 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, 41918 + ... + 55605.

It is an arithmetic number, because the mean of its divisors is an integer number (51200100).

Almost surely, 2^667447412 is an apocalyptic number.

It is an amenable number.

667447412 is a deficient number, since it is larger than the sum of its proper divisors (561354988).

667447412 is a wasteful number, since it uses less digits than its factorization.

667447412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97615 (or 97613 counting only the distinct ones).

The product of its digits is 225792, while the sum is 41.

The square root of 667447412 is about 25835.0036191211. The cubic root of 667447412 is about 873.9213536328.

The spelling of 667447412 in words is "six hundred sixty-seven million, four hundred forty-seven thousand, four hundred twelve".