68253898 has 4 divisors (see below), whose sum is σ = 102380850. Its totient is φ = 34126948.

The previous prime is 68253893. The next prime is 68253901. The reversal of 68253898 is 89835286.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 46416969 + 21836929 = 6813^2 + 4673^2 .

It is not an unprimeable number, because it can be changed into a prime (68253893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17063473 + ... + 17063476.

Almost surely, 2^68253898 is an apocalyptic number.

68253898 is a deficient number, since it is larger than the sum of its proper divisors (34126952).

68253898 is a wasteful number, since it uses less digits than its factorization.

68253898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34126951.

The product of its digits is 829440, while the sum is 49.

The square root of 68253898 is about 8261.5917352530. The cubic root of 68253898 is about 408.6728812354.

The spelling of 68253898 in words is "sixty-eight million, two hundred fifty-three thousand, eight hundred ninety-eight".