68105012 has 18 divisors (see below), whose sum is σ = 122501862. Its totient is φ = 33129504.

The previous prime is 68104999. The next prime is 68105027. The reversal of 68105012 is 21050186.

It can be written as a sum of positive squares in 3 ways, for example, as 18627856 + 49477156 = 4316^2 + 7034^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 743 + ... + 11694.

It is an arithmetic number, because the mean of its divisors is an integer number (6805659).

Almost surely, 2^68105012 is an apocalyptic number.

It is an amenable number.

68105012 is a deficient number, since it is larger than the sum of its proper divisors (54396850).

68105012 is a wasteful number, since it uses less digits than its factorization.

68105012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12515 (or 12476 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 68105012 is about 8252.5760826544. The cubic root of 68105012 is about 408.3755113264.

Adding to 68105012 its reverse (21050186), we get a palindrome (89155198).

It can be divided in two parts, 6 and 8105012, that added together give a palindrome (8105018).

The spelling of 68105012 in words is "sixty-eight million, one hundred five thousand, twelve".