203666412 has 24 divisors (see below), whose sum is σ = 475563312. Its totient is φ = 67840000.

The previous prime is 203666387. The next prime is 203666413. The reversal of 203666412 is 214666302.

203666412 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

203666412 is strictly pandigital in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 203666412.

It is not an unprimeable number, because it can be changed into a prime (203666413) 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, 13912 + ... + 24512.

It is an arithmetic number, because the mean of its divisors is an integer number (19815138).

Almost surely, 2^203666412 is an apocalyptic number.

It is an amenable number.

203666412 is an abundant number, since it is smaller than the sum of its proper divisors (271896900).

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

203666412 is a wasteful number, since it uses less digits than its factorization.

203666412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12209 (or 12207 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 203666412 is about 14271.1741633266. The cubic root of 203666412 is about 588.3554817468.

The spelling of 203666412 in words is "two hundred three million, six hundred sixty-six thousand, four hundred twelve".