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6464807076 = 22371319535879
BaseRepresentation
bin1100000010101010…
…10010000010100100
3121200112200020010010
412001111102002210
5101214442311301
62545255130220
7316126645020
oct60125220244
917615606103
106464807076
112818240272
121305073970
137c047b340
14454843380
1527c84d5d6
hex1815520a4

6464807076 has 192 divisors, whose sum is σ = 19914854400. Its totient is φ = 1584520704.

The previous prime is 6464807047. The next prime is 6464807077. The reversal of 6464807076 is 6707084646.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6464807077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1096705 + ... + 1102583.

It is an arithmetic number, because the mean of its divisors is an integer number (103723200).

Almost surely, 26464807076 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6464807076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9957427200).

6464807076 is an abundant number, since it is smaller than the sum of its proper divisors (13450047324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6464807076 is a wasteful number, since it uses less digits than its factorization.

6464807076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5978 (or 5976 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 48.

The square root of 6464807076 is about 80404.0240037773. The cubic root of 6464807076 is about 1862.8813279604.

The spelling of 6464807076 in words is "six billion, four hundred sixty-four million, eight hundred seven thousand, seventy-six".