68136100 has 18 divisors (see below), whose sum is σ = 147855554. Its totient is φ = 27254400.

The previous prime is 68136077. The next prime is 68136127. The reversal of 68136100 is 163186.

It can be written as a sum of positive squares in 3 ways, for example, as 4901796 + 63234304 = 2214^2 + 7952^2 .

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

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, 340581 + ... + 340780.

Almost surely, 2^68136100 is an apocalyptic number.

It is an amenable number.

68136100 is an abundant number, since it is smaller than the sum of its proper divisors (79719454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68136100 is a wasteful number, since it uses less digits than its factorization.

68136100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681375 (or 681368 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 68136100 is about 8254.4594008330. The cubic root of 68136100 is about 408.4376391410.

Adding to 68136100 its reverse (163186), we get a palindrome (68299286).

The spelling of 68136100 in words is "sixty-eight million, one hundred thirty-six thousand, one hundred".