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168980613 = 383678637
BaseRepresentation
bin10100001001001…
…11000010000101
3102202222002211020
422010213002011
5321224334423
624433501353
74121211564
oct1204470205
9382862736
10168980613
11874266aa
1248711859
1329016339
1418629bdb
15ec7d4e3
hexa127085

168980613 has 8 divisors (see below), whose sum is σ = 228022368. Its totient is φ = 111296304.

The previous prime is 168980611. The next prime is 168980641. The reversal of 168980613 is 316089861.

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

It is not a de Polignac number, because 168980613 - 21 = 168980611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168980611) 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, 339070 + ... + 339567.

It is an arithmetic number, because the mean of its divisors is an integer number (28502796).

Almost surely, 2168980613 is an apocalyptic number.

It is an amenable number.

168980613 is a deficient number, since it is larger than the sum of its proper divisors (59041755).

168980613 is an equidigital number, since it uses as much as digits as its factorization.

168980613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678723.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 168980613 is about 12999.2543247680. The cubic root of 168980613 is about 552.8563392661.

The spelling of 168980613 in words is "one hundred sixty-eight million, nine hundred eighty thousand, six hundred thirteen".

Divisors: 1 3 83 249 678637 2035911 56326871 168980613