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68660676 = 2233790821
BaseRepresentation
bin1000001011110…
…10110111000100
311210012022202000
410011322313010
5120034120201
610451345300
71462414620
oct405726704
9153168660
1068660676
1135836867
121abb2230
13112c0026
149194180
156063d86

68660676 has 48 divisors (see below), whose sum is σ = 203441280. Its totient is φ = 19617120.

The previous prime is 68660617. The next prime is 68660677. The reversal of 68660676 is 67606686.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (68660677) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 44655 + ... + 46166.

It is an arithmetic number, because the mean of its divisors is an integer number (4238360).

Almost surely, 268660676 is an apocalyptic number.

It is an amenable number.

68660676 is an abundant number, since it is smaller than the sum of its proper divisors (134780604).

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

68660676 is a wasteful number, since it uses less digits than its factorization.

68660676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90841 (or 90833 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 68660676 is about 8286.1737852884. The cubic root of 68660676 is about 409.4831400967.

The spelling of 68660676 in words is "sixty-eight million, six hundred sixty thousand, six hundred seventy-six".