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68648995 = 5191734177
BaseRepresentation
bin1000001011110…
…00000000100011
311210011201201101
410011320000203
5120033231440
610451215231
71462335562
oct405700043
9153151641
1068648995
1135829008
121aba7517
13112b790c
14918dbd9
15606069a
hex4178023

68648995 has 16 divisors (see below), whose sum is σ = 87236640. Its totient is φ = 51715584.

The previous prime is 68648947. The next prime is 68649001. The reversal of 68648995 is 59984686.

It is a cyclic number.

It is not a de Polignac number, because 68648995 - 29 = 68648483 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14347 + ... + 18523.

It is an arithmetic number, because the mean of its divisors is an integer number (5452290).

Almost surely, 268648995 is an apocalyptic number.

68648995 is a deficient number, since it is larger than the sum of its proper divisors (18587645).

68648995 is a wasteful number, since it uses less digits than its factorization.

68648995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4374.

The product of its digits is 3732480, while the sum is 55.

The square root of 68648995 is about 8285.4689064651. The cubic root of 68648995 is about 409.4599174696.

The spelling of 68648995 in words is "sixty-eight million, six hundred forty-eight thousand, nine hundred ninety-five".

Divisors: 1 5 19 95 173 865 3287 4177 16435 20885 79363 396815 722621 3613105 13729799 68648995