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106906689449 = 783184004629
BaseRepresentation
bin110001110010000100…
…0101001111110101001
3101012221111210112000122
41203210020221332221
53222421103030244
6121040125213025
710503150603230
oct1434410517651
9335844715018
10106906689449
114138004810a
1218876a01175
13a1096a4931
14526244bb17
152baa7711ee
hex18e4229fa9

106906689449 has 8 divisors (see below), whose sum is σ = 123651111360. Its totient is φ = 90530276976.

The previous prime is 106906689431. The next prime is 106906689457. The reversal of 106906689449 is 944986609601.

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 106906689449 - 228 = 106638253993 is a prime.

It is a super-2 number, since 2×1069066894492 (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 106906689391 and 106906689400.

It is not an unprimeable number, because it can be changed into a prime (106906689479) 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, 92001734 + ... + 92002895.

It is an arithmetic number, because the mean of its divisors is an integer number (15456388920).

Almost surely, 2106906689449 is an apocalyptic number.

It is an amenable number.

106906689449 is a deficient number, since it is larger than the sum of its proper divisors (16744421911).

106906689449 is an equidigital number, since it uses as much as digits as its factorization.

106906689449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184004719.

The product of its (nonzero) digits is 20155392, while the sum is 62.

The spelling of 106906689449 in words is "one hundred six billion, nine hundred six million, six hundred eighty-nine thousand, four hundred forty-nine".

Divisors: 1 7 83 581 184004629 1288032403 15272384207 106906689449