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BaseRepresentation
bin10010001111101001
310210111202
4102033221
54342404
61333545
7430604
oct221751
9123452
1074729
1151166
12372b5
1328025
141d33b
151721e
hex123e9

74729 has 2 divisors, whose sum is σ = 74730. Its totient is φ = 74728.

The previous prime is 74719. The next prime is 74731. The reversal of 74729 is 92747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61504 + 13225 = 248^2 + 115^2 .

It is a cyclic number.

It is not a de Polignac number, because 74729 - 24 = 74713 is a prime.

It is a Sophie Germain prime.

Together with 74731, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (74719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37364 + 37365.

It is an arithmetic number, because the mean of its divisors is an integer number (37365).

274729 is an apocalyptic number.

It is an amenable number.

74729 is a deficient number, since it is larger than the sum of its proper divisors (1).

74729 is an equidigital number, since it uses as much as digits as its factorization.

74729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3528, while the sum is 29.

The square root of 74729 is about 273.3660549520. The cubic root of 74729 is about 42.1207785748.

The spelling of 74729 in words is "seventy-four thousand, seven hundred twenty-nine".