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64622105 = 553243857
BaseRepresentation
bin1111011010000…
…0111000011001
311111121010212022
43312200320121
5113020401410
610225024225
71413164432
oct366407031
9144533768
1064622105
11335285a9
1219785075
1310507a42
148822489
155a17455
hex3da0e19

64622105 has 8 divisors (see below), whose sum is σ = 79009992. Its totient is φ = 50722048.

The previous prime is 64622093. The next prime is 64622113. The reversal of 64622105 is 50122646.

64622105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 13756681 + 50865424 = 3709^2 + 7132^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 64622105 - 214 = 64605721 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121664 + ... + 122193.

It is an arithmetic number, because the mean of its divisors is an integer number (9876249).

Almost surely, 264622105 is an apocalyptic number.

It is an amenable number.

64622105 is a deficient number, since it is larger than the sum of its proper divisors (14387887).

64622105 is a wasteful number, since it uses less digits than its factorization.

64622105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243915.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 64622105 is about 8038.7875329555. The cubic root of 64622105 is about 401.2918752375.

The spelling of 64622105 in words is "sixty-four million, six hundred twenty-two thousand, one hundred five".

Divisors: 1 5 53 265 243857 1219285 12924421 64622105