68546 has 4 divisors (see below), whose sum is σ = 102822. Its totient is φ = 34272.

The previous prime is 68543. The next prime is 68567. The reversal of 68546 is 64586.

68546 = 70² + 71² + ... + 81².

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

It can be written as a sum of positive squares in only one way, i.e., 44521 + 24025 = 211^2 + 155^2 .

It is not an unprimeable number, because it can be changed into a prime (68543) by changing a digit.

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 as a sum of consecutive naturals, namely, 17135 + ... + 17138.

2⁶⁸⁵⁴⁶ is an apocalyptic number.

68546 is a deficient number, since it is larger than the sum of its proper divisors (34276).

68546 is a wasteful number, since it uses less digits than its factorization.

68546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34275.

The product of its digits is 5760, while the sum is 29.

The square root of 68546 is about 261.8129103005. The cubic root of 68546 is about 40.9255042257.

It can be divided in two parts, 68 and 546, that multiplied together give a triangular number (37128 = T₂₇₂).

The spelling of 68546 in words is "sixty-eight thousand, five hundred forty-six".