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68211083 = 193590057
BaseRepresentation
bin1000001000011…
…01000110001011
311202100111000102
410010031012023
5114430223313
610434000015
71455533063
oct404150613
9152314012
1068211083
1135559aa6
121aa1600b
13111934b5
1490b83a3
155ec5a58
hex410d18b

68211083 has 4 divisors (see below), whose sum is σ = 71801160. Its totient is φ = 64621008.

The previous prime is 68211071. The next prime is 68211097. The reversal of 68211083 is 38011286.

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 68211083 - 26 = 68211019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68211383) 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, 1795010 + ... + 1795047.

It is an arithmetic number, because the mean of its divisors is an integer number (17950290).

Almost surely, 268211083 is an apocalyptic number.

68211083 is a deficient number, since it is larger than the sum of its proper divisors (3590077).

68211083 is a wasteful number, since it uses less digits than its factorization.

68211083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3590076.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 68211083 is about 8259.0001210800. Note that the first 3 decimals coincide. The cubic root of 68211083 is about 408.5874111996.

The spelling of 68211083 in words is "sixty-eight million, two hundred eleven thousand, eighty-three".

Divisors: 1 19 3590057 68211083