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68549773 = 3110920287
BaseRepresentation
bin1000001010111…
…11110010001101
311202222200121111
410011133302031
5120022043043
610445132021
71461443365
oct405376215
9152880544
1068549773
1135770506
121ab5a011
13112816c6
1491659a5
15604109d
hex415fc8d

68549773 has 8 divisors (see below), whose sum is σ = 71413760. Its totient is φ = 65726640.

The previous prime is 68549759. The next prime is 68549791. The reversal of 68549773 is 37794586.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68549773 - 213 = 68541581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68549713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6765 + ... + 13522.

It is an arithmetic number, because the mean of its divisors is an integer number (8926720).

Almost surely, 268549773 is an apocalyptic number.

It is an amenable number.

68549773 is a deficient number, since it is larger than the sum of its proper divisors (2863987).

68549773 is a wasteful number, since it uses less digits than its factorization.

68549773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20427.

The product of its digits is 1270080, while the sum is 49.

The square root of 68549773 is about 8279.4790295042. The cubic root of 68549773 is about 409.2625510390.

The spelling of 68549773 in words is "sixty-eight million, five hundred forty-nine thousand, seven hundred seventy-three".

Divisors: 1 31 109 3379 20287 628897 2211283 68549773