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68672086 = 274905149
BaseRepresentation
bin1000001011111…
…01101001010110
311210012220101121
410011331221112
5120040001321
610451514154
71462463110
oct405755126
9153186347
1068672086
113584439a
121abb895a
13112c5292
1491983b0
156067441
hex417da56

68672086 has 8 divisors (see below), whose sum is σ = 117723600. Its totient is φ = 29430888.

The previous prime is 68672083. The next prime is 68672101. The reversal of 68672086 is 68027686.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68672081) 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, 2452561 + ... + 2452588.

It is an arithmetic number, because the mean of its divisors is an integer number (14715450).

Almost surely, 268672086 is an apocalyptic number.

68672086 is a deficient number, since it is larger than the sum of its proper divisors (49051514).

68672086 is a wasteful number, since it uses less digits than its factorization.

68672086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4905158.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 68672086 is about 8286.8622529882. The cubic root of 68672086 is about 409.5058214145.

The spelling of 68672086 in words is "sixty-eight million, six hundred seventy-two thousand, eighty-six".

Divisors: 1 2 7 14 4905149 9810298 34336043 68672086