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68244893 = 478871637
BaseRepresentation
bin1000001000101…
…01010110011101
311202102012101122
410010111112131
5114432314033
610434420325
71456033463
oct404252635
9152365348
1068244893
1135582442
121aa316a5
13111a59c2
1490c6833
155ed0a98
hex411559d

68244893 has 8 divisors (see below), whose sum is σ = 69818112. Its totient is φ = 66676816.

The previous prime is 68244889. The next prime is 68244899. The reversal of 68244893 is 39844286.

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 68244893 - 22 = 68244889 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 (68244899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40871 + ... + 42507.

It is an arithmetic number, because the mean of its divisors is an integer number (8727264).

Almost surely, 268244893 is an apocalyptic number.

It is an amenable number.

68244893 is a deficient number, since it is larger than the sum of its proper divisors (1573219).

68244893 is a wasteful number, since it uses less digits than its factorization.

68244893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2571.

The product of its digits is 331776, while the sum is 44.

The square root of 68244893 is about 8261.0467254459. The cubic root of 68244893 is about 408.6549078485.

The spelling of 68244893 in words is "sixty-eight million, two hundred forty-four thousand, eight hundred ninety-three".

Divisors: 1 47 887 1637 41689 76939 1452019 68244893