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168704207 = 731493301
BaseRepresentation
bin10100000111000…
…11100011001111
3102202110001122222
422003203203033
5321142013312
624423525555
74115651000
oct1203434317
9382401588
10168704207
1187257a71
12485b98bb
1328c4a599
14185971a7
15ec26672
hexa0e38cf

168704207 has 16 divisors (see below), whose sum is σ = 198120000. Its totient is φ = 143589600.

The previous prime is 168704203. The next prime is 168704213. The reversal of 168704207 is 702407861.

It is a happy number.

168704207 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 168704207 - 22 = 168704203 is a prime.

It is a super-2 number, since 2×1687042072 = 56922218918997698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168704203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49457 + ... + 52757.

It is an arithmetic number, because the mean of its divisors is an integer number (12382500).

Almost surely, 2168704207 is an apocalyptic number.

168704207 is a deficient number, since it is larger than the sum of its proper divisors (29415793).

168704207 is an equidigital number, since it uses as much as digits as its factorization.

168704207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3471 (or 3457 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 168704207 is about 12988.6183637830. The cubic root of 168704207 is about 552.5547342429.

The spelling of 168704207 in words is "one hundred sixty-eight million, seven hundred four thousand, two hundred seven".

Divisors: 1 7 49 149 343 1043 3301 7301 23107 51107 161749 491849 1132243 3442943 24100601 168704207