204012646 has 4 divisors (see below), whose sum is σ = 306018972. Its totient is φ = 102006322.

The previous prime is 204012629. The next prime is 204012689. The reversal of 204012646 is 646210402.

204012646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 204012646.

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, 51003160 + ... + 51003163.

It is an arithmetic number, because the mean of its divisors is an integer number (76504743).

Almost surely, 2^204012646 is an apocalyptic number.

204012646 is a deficient number, since it is larger than the sum of its proper divisors (102006326).

204012646 is a wasteful number, since it uses less digits than its factorization.

204012646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102006325.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 204012646 is about 14283.2995487737. The cubic root of 204012646 is about 588.6886954949.

The spelling of 204012646 in words is "two hundred four million, twelve thousand, six hundred forty-six".