68650 has 12 divisors (see below), whose sum is σ = 127782. Its totient is φ = 27440.

The previous prime is 68639. The next prime is 68659. The reversal of 68650 is 5686.

It can be written as a sum of positive squares in 3 ways, for example, as 66049 + 2601 = 257^2 + 51^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an Ulam number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (68659) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 637 + ... + 736.

2⁶⁸⁶⁵⁰ is an apocalyptic number.

68650 is a deficient number, since it is larger than the sum of its proper divisors (59132).

68650 is a wasteful number, since it uses less digits than its factorization.

68650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385 (or 1380 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 68650 is about 262.0114501315. The cubic root of 68650 is about 40.9461915582.

The spelling of 68650 in words is "sixty-eight thousand, six hundred fifty".