68512 has 12 divisors (see below), whose sum is σ = 134946. Its totient is φ = 34240.

The previous prime is 68507. The next prime is 68521. The reversal of 68512 is 21586.

It is a happy number.

68512 is nontrivially palindromic in base 13.

It can be written as a sum of positive squares in only one way, i.e., 41616 + 26896 = 204^2 + 164^2 .

68512 is an undulating number in base 13.

It is an unprimeable number.

68512 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1039 + ... + 1102.

2⁶⁸⁵¹² is an apocalyptic number.

It is an amenable number.

68512 is a deficient number, since it is larger than the sum of its proper divisors (66434).

68512 is a wasteful number, since it uses less digits than its factorization.

68512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2151 (or 2143 counting only the distinct ones).

The product of its digits is 480, while the sum is 22.

The square root of 68512 is about 261.7479703837. The cubic root of 68512 is about 40.9187365209.

The spelling of 68512 in words is "sixty-eight thousand, five hundred twelve".