204961071 has 12 divisors (see below), whose sum is σ = 317899032. Its totient is φ = 117120528.

The previous prime is 204961063. The next prime is 204961079. The reversal of 204961071 is 170169402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (204961063) and next prime (204961079).

It is not a de Polignac number, because 204961071 - 2³ = 204961063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204961079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 697000 + ... + 697293.

It is an arithmetic number, because the mean of its divisors is an integer number (26491586).

Almost surely, 2^204961071 is an apocalyptic number.

204961071 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

204961071 is a deficient number, since it is larger than the sum of its proper divisors (112937961).

204961071 is a wasteful number, since it uses less digits than its factorization.

204961071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1394310 (or 1394303 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 204961071 is about 14316.4615390815. The cubic root of 204961071 is about 589.5995281008.

The spelling of 204961071 in words is "two hundred four million, nine hundred sixty-one thousand, seventy-one".