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206705051 = 737798089
BaseRepresentation
bin11000101001000…
…01000110011011
3112101221201000122
430110201012123
5410404030201
632302223455
75056651430
oct1424410633
9471851018
10206705051
11a6752623
1259284b8b
1333a941a7
141d649b87
1513230e1b
hexc52119b

206705051 has 8 divisors (see below), whose sum is σ = 242619360. Its totient is φ = 172387008.

The previous prime is 206705041. The next prime is 206705053. The reversal of 206705051 is 150507602.

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

It is a cyclic number.

It is not a de Polignac number, because 206705051 - 26 = 206704987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 206705051.

It is not an unprimeable number, because it can be changed into a prime (206705053) 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, 398786 + ... + 399303.

It is an arithmetic number, because the mean of its divisors is an integer number (30327420).

Almost surely, 2206705051 is an apocalyptic number.

206705051 is a deficient number, since it is larger than the sum of its proper divisors (35914309).

206705051 is an equidigital number, since it uses as much as digits as its factorization.

206705051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798133.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 206705051 is about 14377.2407297089. The cubic root of 206705051 is about 591.2670758060.

The spelling of 206705051 in words is "two hundred six million, seven hundred five thousand, fifty-one".

Divisors: 1 7 37 259 798089 5586623 29529293 206705051