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61730 = 256173
BaseRepresentation
bin1111000100100010
310010200022
433010202
53433410
61153442
7344654
oct170442
9103608
1061730
1142419
122b882
1322136
14186d4
1513455
hexf122

61730 has 8 divisors (see below), whose sum is σ = 111132. Its totient is φ = 24688.

The previous prime is 61729. The next prime is 61751. The reversal of 61730 is 3716.

It can be written as a sum of positive squares in 2 ways, for example, as 51529 + 10201 = 227^2 + 101^2 .

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

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 61699 and 61708.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3077 + ... + 3096.

261730 is an apocalyptic number.

61730 is a deficient number, since it is larger than the sum of its proper divisors (49402).

61730 is a wasteful number, since it uses less digits than its factorization.

61730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6180.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 61730 is about 248.4552273550. The cubic root of 61730 is about 39.5213792292.

The spelling of 61730 in words is "sixty-one thousand, seven hundred thirty".

Divisors: 1 2 5 10 6173 12346 30865 61730