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68673996 = 22321907611
BaseRepresentation
bin1000001011111…
…10000111001100
311210020000000100
410011332013030
5120040031441
610451531100
71462501506
oct405760714
9153200010
1068673996
1135845876
121abb9a90
13112c6101
149198d76
156067cb6
hex417e1cc

68673996 has 18 divisors (see below), whose sum is σ = 173592692. Its totient is φ = 22891320.

The previous prime is 68673977. The next prime is 68674009. The reversal of 68673996 is 69937686.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×686739962 = 9432235453216032, which contains 22 as substring.

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 5 ways as a sum of consecutive naturals, for example, 953770 + ... + 953841.

Almost surely, 268673996 is an apocalyptic number.

It is an amenable number.

68673996 is an abundant number, since it is smaller than the sum of its proper divisors (104918696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68673996 is a wasteful number, since it uses less digits than its factorization.

68673996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1907621 (or 1907616 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 68673996 is about 8286.9774948409. The cubic root of 68673996 is about 409.5096179540.

The spelling of 68673996 in words is "sixty-eight million, six hundred seventy-three thousand, nine hundred ninety-six".

Divisors: 1 2 3 4 6 9 12 18 36 1907611 3815222 5722833 7630444 11445666 17168499 22891332 34336998 68673996