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68621201 = 116238291
BaseRepresentation
bin1000001011100…
…01001110010001
311210010022120222
410011301032101
5120031334301
610450442425
71462161545
oct405611621
9153108528
1068621201
113580a140
121ab93415
13112a807c
149183a25
15605731b
hex4171391

68621201 has 4 divisors (see below), whose sum is σ = 74859504. Its totient is φ = 62382900.

The previous prime is 68621177. The next prime is 68621219. The reversal of 68621201 is 10212686.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68621201 - 214 = 68604817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68623201) 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 3 ways as a sum of consecutive naturals, for example, 3119135 + ... + 3119156.

It is an arithmetic number, because the mean of its divisors is an integer number (18714876).

Almost surely, 268621201 is an apocalyptic number.

It is an amenable number.

68621201 is a deficient number, since it is larger than the sum of its proper divisors (6238303).

68621201 is a wasteful number, since it uses less digits than its factorization.

68621201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6238302.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 68621201 is about 8283.7914628508. The cubic root of 68621201 is about 409.4046505028.

Adding to 68621201 its reverse (10212686), we get a palindrome (78833887).

The spelling of 68621201 in words is "sixty-eight million, six hundred twenty-one thousand, two hundred one".

Divisors: 1 11 6238291 68621201