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66673 = 611093
BaseRepresentation
bin10000010001110001
310101110101
4100101301
54113143
61232401
7365245
oct202161
9111411
1066673
1146102
1232701
1324469
141a425
1514b4d
hex10471

66673 has 4 divisors (see below), whose sum is σ = 67828. Its totient is φ = 65520.

The previous prime is 66653. The next prime is 66683. The reversal of 66673 is 37666.

66673 is nontrivially palindromic in base 3.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35344 + 31329 = 188^2 + 177^2 .

It is a cyclic number.

It is not a de Polignac number, because 66673 - 29 = 66161 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (66643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486 + ... + 607.

It is an arithmetic number, because the mean of its divisors is an integer number (16957).

266673 is an apocalyptic number.

It is an amenable number.

66673 is a deficient number, since it is larger than the sum of its proper divisors (1155).

66673 is a wasteful number, since it uses less digits than its factorization.

66673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154.

The product of its digits is 4536, while the sum is 28.

The square root of 66673 is about 258.2111539032. The cubic root of 66673 is about 40.5492972836.

It can be divided in two parts, 6667 and 3, that added together give a triangular number (6670 = T115).

The spelling of 66673 in words is "sixty-six thousand, six hundred seventy-three".

Divisors: 1 61 1093 66673