205770147 has 8 divisors (see below), whose sum is σ = 299302080. Its totient is φ = 124709160.

The previous prime is 205770143. The next prime is 205770161. The reversal of 205770147 is 741077502.

It is a happy number.

205770147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 205770147 - 2² = 205770143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 6235459 = 205770147 / (2 + 0 + 5 + 7 + 7 + 0 + 1 + 4 + 7).

It is not an unprimeable number, because it can be changed into a prime (205770143) 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, 3117697 + ... + 3117762.

It is an arithmetic number, because the mean of its divisors is an integer number (37412760).

Almost surely, 2^205770147 is an apocalyptic number.

205770147 is a deficient number, since it is larger than the sum of its proper divisors (93531933).

205770147 is a wasteful number, since it uses less digits than its factorization.

205770147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6235473.

The product of its (nonzero) digits is 13720, while the sum is 33.

The square root of 205770147 is about 14344.6905508624. The cubic root of 205770147 is about 590.3743167170.

The spelling of 205770147 in words is "two hundred five million, seven hundred seventy thousand, one hundred forty-seven".