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68972799 = 37311011049
BaseRepresentation
bin1000001110001…
…11000011111111
311210210011220010
410013013003333
5120124112144
610502154303
71465154610
oct407070377
9153704803
1068972799
1135a2a315
121b122993
131139c10c
149235c07
1560c65b9
hex41c70ff

68972799 has 32 divisors (see below), whose sum is σ = 109670400. Its totient is φ = 37728000.

The previous prime is 68972789. The next prime is 68972801. The reversal of 68972799 is 99727986.

It is not a de Polignac number, because 68972799 - 29 = 68972287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68972719) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65227 + ... + 66275.

It is an arithmetic number, because the mean of its divisors is an integer number (3427200).

Almost surely, 268972799 is an apocalyptic number.

68972799 is a deficient number, since it is larger than the sum of its proper divisors (40697601).

68972799 is a wasteful number, since it uses less digits than its factorization.

68972799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191.

The product of its digits is 3429216, while the sum is 57.

The square root of 68972799 is about 8304.9863937276. The cubic root of 68972799 is about 410.1026889323.

The spelling of 68972799 in words is "sixty-eight million, nine hundred seventy-two thousand, seven hundred ninety-nine".

Divisors: 1 3 7 21 31 93 101 217 303 651 707 1049 2121 3131 3147 7343 9393 21917 22029 32519 65751 97557 105949 227633 317847 682899 741643 2224929 3284419 9853257 22990933 68972799