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8685990069 = 36491446053
BaseRepresentation
bin10000001011011100…
…11011000010110101
3211102100020000100220
420011232123002311
5120242103140234
63553522524553
7425150461131
oct100556330265
924370200326
108685990069
113758018999
121824b06759
13a856b86c3
145c58363c1
1535c851a49
hex205b9b0b5

8685990069 has 8 divisors (see below), whose sum is σ = 11583130272. Its totient is φ = 5789754960.

The previous prime is 8685990059. The next prime is 8685990077. The reversal of 8685990069 is 9600995868.

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

It is not a de Polignac number, because 8685990069 - 213 = 8685981877 is a prime.

It is a super-2 number, since 2×86859900692 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8685989994 and 8685990021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8685990029) 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, 203554 + ... + 242499.

It is an arithmetic number, because the mean of its divisors is an integer number (1447891284).

Almost surely, 28685990069 is an apocalyptic number.

It is an amenable number.

8685990069 is a deficient number, since it is larger than the sum of its proper divisors (2897140203).

8685990069 is a wasteful number, since it uses less digits than its factorization.

8685990069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452547.

The product of its (nonzero) digits is 8398080, while the sum is 60.

The square root of 8685990069 is about 93198.6591588098. The cubic root of 8685990069 is about 2055.6055243434.

The spelling of 8685990069 in words is "eight billion, six hundred eighty-five million, nine hundred ninety thousand, sixty-nine".

Divisors: 1 3 6491 19473 446053 1338159 2895330023 8685990069