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BaseRepresentation
bin1000001011110…
…10110111010101
311210012022202122
410011322313111
5120034120233
610451345325
71462414643
oct405726725
9153168678
1068660693
1135836882
121abb2245
13112c003a
149194193
156063d98

68660693 has 2 divisors, whose sum is σ = 68660694. Its totient is φ = 68660692.

The previous prime is 68660689. The next prime is 68660707. The reversal of 68660693 is 39606686.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68591524 + 69169 = 8282^2 + 263^2 .

It is a cyclic number.

It is not a de Polignac number, because 68660693 - 22 = 68660689 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68660393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34330346 + 34330347.

It is an arithmetic number, because the mean of its divisors is an integer number (34330347).

Almost surely, 268660693 is an apocalyptic number.

It is an amenable number.

68660693 is a deficient number, since it is larger than the sum of its proper divisors (1).

68660693 is an equidigital number, since it uses as much as digits as its factorization.

68660693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 68660693 is about 8286.1748110935. The cubic root of 68660693 is about 409.4831738919.

The spelling of 68660693 in words is "sixty-eight million, six hundred sixty thousand, six hundred ninety-three".