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68847197 = 523131639
BaseRepresentation
bin1000001101010…
…00011001011101
311210112210121012
410012220121131
5120111102242
610455345005
71464122456
oct406503135
9153483535
1068847197
1135953a11
121b082165
1311356bb3
14920212d
15609e282
hex41a865d

68847197 has 4 divisors (see below), whose sum is σ = 68979360. Its totient is φ = 68715036.

The previous prime is 68847179. The next prime is 68847239. The reversal of 68847197 is 79174886.

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 68847197 - 26 = 68847133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68847137) 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, 65297 + ... + 66342.

It is an arithmetic number, because the mean of its divisors is an integer number (17244840).

Almost surely, 268847197 is an apocalyptic number.

It is an amenable number.

68847197 is a deficient number, since it is larger than the sum of its proper divisors (132163).

68847197 is a wasteful number, since it uses less digits than its factorization.

68847197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132162.

The product of its digits is 677376, while the sum is 50.

The square root of 68847197 is about 8297.4211053797. The cubic root of 68847197 is about 409.8536003187.

The spelling of 68847197 in words is "sixty-eight million, eight hundred forty-seven thousand, one hundred ninety-seven".

Divisors: 1 523 131639 68847197