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6812372069 = 1392352589
BaseRepresentation
bin1100101100000110…
…01000110001100101
3122120202200100122122
412112003020301211
5102422431401234
63043552435325
7330550131026
oct62603106145
918522610578
106812372069
112986451a68
1213a1548b45
138474910b9
14488a78c4d
1529d10592e
hex1960c8c65

6812372069 has 6 divisors (see below), whose sum is σ = 6861753990. Its totient is φ = 6763343016.

The previous prime is 6812372053. The next prime is 6812372101. The reversal of 6812372069 is 9602732186.

It can be written as a sum of positive squares in only one way, i.e., 6725640100 + 86731969 = 82010^2 + 9313^2 .

It is not a de Polignac number, because 6812372069 - 24 = 6812372053 is a prime.

It is a super-2 number, since 2×68123720692 = 92816826412982681522, 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 (6812372269) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 156974 + ... + 195615.

It is an arithmetic number, because the mean of its divisors is an integer number (1143625665).

Almost surely, 26812372069 is an apocalyptic number.

It is an amenable number.

6812372069 is a deficient number, since it is larger than the sum of its proper divisors (49381921).

6812372069 is an equidigital number, since it uses as much as digits as its factorization.

6812372069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352867 (or 352728 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 6812372069 is about 82537.0951088055. The cubic root of 6812372069 is about 1895.6847653026.

The spelling of 6812372069 in words is "six billion, eight hundred twelve million, three hundred seventy-two thousand, sixty-nine".

Divisors: 1 139 19321 352589 49009871 6812372069