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64710121 = 720634481
BaseRepresentation
bin1111011011011…
…0010111101001
311111202121121011
43312312113221
5113031210441
610230543521
71414012150
oct366662751
9144677534
1064710121
1133588743
1219807ba1
1310538b18
148846597
155a33581
hex3db65e9

64710121 has 8 divisors (see below), whose sum is σ = 74006784. Its totient is φ = 55426560.

The previous prime is 64710103. The next prime is 64710127. The reversal of 64710121 is 12101746.

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

It is not a de Polignac number, because 64710121 - 25 = 64710089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64710092 and 64710101.

It is not an unprimeable number, because it can be changed into a prime (64710127) 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 7 ways as a sum of consecutive naturals, for example, 12201 + ... + 16681.

It is an arithmetic number, because the mean of its divisors is an integer number (9250848).

Almost surely, 264710121 is an apocalyptic number.

It is an amenable number.

64710121 is a deficient number, since it is larger than the sum of its proper divisors (9296663).

64710121 is a wasteful number, since it uses less digits than its factorization.

64710121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6551.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 64710121 is about 8044.2601275692. The cubic root of 64710121 is about 401.4739805318.

Adding to 64710121 its reverse (12101746), we get a palindrome (76811867).

The spelling of 64710121 in words is "sixty-four million, seven hundred ten thousand, one hundred twenty-one".

Divisors: 1 7 2063 4481 14441 31367 9244303 64710121