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66676 = 2279211
BaseRepresentation
bin10000010001110100
310101110111
4100101310
54113201
61232404
7365251
oct202164
9111414
1066676
1146105
1232704
132446c
141a428
1514b51
hex10474

66676 has 12 divisors (see below), whose sum is σ = 118720. Its totient is φ = 32760.

The previous prime is 66653. The next prime is 66683. The reversal of 66676 is 67666.

It is a happy number.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211 + ... + 421.

266676 is an apocalyptic number.

66676 is the 211-st pentagonal number.

It is an amenable number.

66676 is a deficient number, since it is larger than the sum of its proper divisors (52044).

66676 is a wasteful number, since it uses less digits than its factorization.

66676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294 (or 292 counting only the distinct ones).

The product of its digits is 9072, while the sum is 31.

The square root of 66676 is about 258.2169630369. The cubic root of 66676 is about 40.5499054561.

Subtracting 66676 from its reverse (67666), we obtain a triangular number (990 = T44).

The spelling of 66676 in words is "sixty-six thousand, six hundred seventy-six".

Divisors: 1 2 4 79 158 211 316 422 844 16669 33338 66676