68253736 has 8 divisors (see below), whose sum is σ = 127975770. Its totient is φ = 34126864.

The previous prime is 68253727. The next prime is 68253739. The reversal of 68253736 is 63735286.

It can be written as a sum of positive squares in only one way, i.e., 60996100 + 7257636 = 7810^2 + 2694^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (68253739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4265851 + ... + 4265866.

Almost surely, 2^68253736 is an apocalyptic number.

It is an amenable number.

68253736 is a deficient number, since it is larger than the sum of its proper divisors (59722034).

68253736 is a wasteful number, since it uses less digits than its factorization.

68253736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8531723 (or 8531719 counting only the distinct ones).

The product of its digits is 181440, while the sum is 40.

The square root of 68253736 is about 8261.5819308411. The cubic root of 68253736 is about 408.6725579080.

The spelling of 68253736 in words is "sixty-eight million, two hundred fifty-three thousand, seven hundred thirty-six".