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68838835 = 5131059059
BaseRepresentation
bin1000001101001…
…10010110110011
311210112101010111
410012212112303
5120110320320
610455242151
71464056212
oct406462663
9153471114
1068838835
11359486aa
121b079357
1311353150
1491dd079
15609ba5a
hex41a65b3

68838835 has 8 divisors (see below), whose sum is σ = 88961040. Its totient is φ = 50834784.

The previous prime is 68838821. The next prime is 68838853. The reversal of 68838835 is 53883886.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68838835 - 211 = 68836787 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529465 + ... + 529594.

It is an arithmetic number, because the mean of its divisors is an integer number (11120130).

Almost surely, 268838835 is an apocalyptic number.

68838835 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

68838835 is a deficient number, since it is larger than the sum of its proper divisors (20122205).

68838835 is a wasteful number, since it uses less digits than its factorization.

68838835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059077.

The product of its digits is 1105920, while the sum is 49.

The square root of 68838835 is about 8296.9171985744. The cubic root of 68838835 is about 409.8370063990.

The spelling of 68838835 in words is "sixty-eight million, eight hundred thirty-eight thousand, eight hundred thirty-five".

Divisors: 1 5 13 65 1059059 5295295 13767767 68838835