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68058653 = 135235281
BaseRepresentation
bin1000000111001…
…11111000011101
311202001201220212
410003213320131
5114410334103
610430422205
71454326505
oct403477035
9152051825
1068058653
1135465523
121a961965
131113bcc0
149078a05
155e957d8
hex40e7e1d

68058653 has 4 divisors (see below), whose sum is σ = 73293948. Its totient is φ = 62823360.

The previous prime is 68058649. The next prime is 68058673. The reversal of 68058653 is 35685086.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35685086 = 217842543.

It can be written as a sum of positive squares in 2 ways, for example, as 15031129 + 53027524 = 3877^2 + 7282^2 .

It is a cyclic number.

It is not a de Polignac number, because 68058653 - 22 = 68058649 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68058653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68058643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2617628 + ... + 2617653.

It is an arithmetic number, because the mean of its divisors is an integer number (18323487).

Almost surely, 268058653 is an apocalyptic number.

It is an amenable number.

68058653 is a deficient number, since it is larger than the sum of its proper divisors (5235295).

68058653 is a wasteful number, since it uses less digits than its factorization.

68058653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5235294.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 68058653 is about 8249.7668451902. The cubic root of 68058653 is about 408.2828300536.

The spelling of 68058653 in words is "sixty-eight million, fifty-eight thousand, six hundred fifty-three".

Divisors: 1 13 5235281 68058653