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6540306007 = 64310171549
BaseRepresentation
bin1100001011101010…
…10010011001010111
3121212210201222011211
412011311102121113
5101343304243012
63000553242251
7321034453354
oct60565223127
917783658154
106540306007
112856917784
121326403387
13802cc3a71
1446089762b
152842b36a7
hex185d52657

6540306007 has 4 divisors (see below), whose sum is σ = 6550478200. Its totient is φ = 6530133816.

The previous prime is 6540305953. The next prime is 6540306023. The reversal of 6540306007 is 7006030456.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6540306007 - 215 = 6540273239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6540306007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6540300007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5085132 + ... + 5086417.

It is an arithmetic number, because the mean of its divisors is an integer number (1637619550).

Almost surely, 26540306007 is an apocalyptic number.

6540306007 is a deficient number, since it is larger than the sum of its proper divisors (10172193).

6540306007 is a wasteful number, since it uses less digits than its factorization.

6540306007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10172192.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 6540306007 is about 80872.1584168495. The cubic root of 6540306007 is about 1870.1051354999.

The spelling of 6540306007 in words is "six billion, five hundred forty million, three hundred six thousand, seven".

Divisors: 1 643 10171549 6540306007