204740745 has 64 divisors (see below), whose sum is σ = 367718400. Its totient is φ = 96445440.

The previous prime is 204740743. The next prime is 204740773. The reversal of 204740745 is 547047402.

It is not a de Polignac number, because 204740745 - 2¹ = 204740743 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (204740743) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1472886 + ... + 1473024.

It is an arithmetic number, because the mean of its divisors is an integer number (5745600).

Almost surely, 2^204740745 is an apocalyptic number.

It is an amenable number.

204740745 is a deficient number, since it is larger than the sum of its proper divisors (162977655).

204740745 is a wasteful number, since it uses less digits than its factorization.

204740745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350.

The product of its (nonzero) digits is 31360, while the sum is 33.

The square root of 204740745 is about 14308.7646217275. The cubic root of 204740745 is about 589.3881860472.

The spelling of 204740745 in words is "two hundred four million, seven hundred forty thousand, seven hundred forty-five".