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68754893 = 431598951
BaseRepresentation
bin1000001100100…
…01110111001101
311210101002222112
410012101313031
5120100124033
610453353405
71463256404
oct406216715
9153332875
1068754893
11358a0629
121b038865
1311323b8c
1491ba63b
156081c48
hex4191dcd

68754893 has 4 divisors (see below), whose sum is σ = 70353888. Its totient is φ = 67155900.

The previous prime is 68754859. The next prime is 68754913. The reversal of 68754893 is 39845786.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68754893 - 222 = 64560589 is a prime.

It is a super-2 number, since 2×687548932 = 9454470622882898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68754823) 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 3 ways as a sum of consecutive naturals, for example, 799433 + ... + 799518.

It is an arithmetic number, because the mean of its divisors is an integer number (17588472).

Almost surely, 268754893 is an apocalyptic number.

It is an amenable number.

68754893 is a deficient number, since it is larger than the sum of its proper divisors (1598995).

68754893 is a wasteful number, since it uses less digits than its factorization.

68754893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1598994.

The product of its digits is 1451520, while the sum is 50.

The square root of 68754893 is about 8291.8570296406. The cubic root of 68754893 is about 409.6703537097.

The spelling of 68754893 in words is "sixty-eight million, seven hundred fifty-four thousand, eight hundred ninety-three".

Divisors: 1 43 1598951 68754893