68829538 has 4 divisors (see below), whose sum is σ = 103244310. Its totient is φ = 34414768.

The previous prime is 68829511. The next prime is 68829539. The reversal of 68829538 is 83592886.

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., 36759969 + 32069569 = 6063^2 + 5663^2 .

It is a junction number, because it is equal to n+sod(n) for n = 68829491 and 68829500.

It is not an unprimeable number, because it can be changed into a prime (68829539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17207383 + ... + 17207386.

Almost surely, 2^68829538 is an apocalyptic number.

68829538 is a deficient number, since it is larger than the sum of its proper divisors (34414772).

68829538 is a wasteful number, since it uses less digits than its factorization.

68829538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34414771.

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

The square root of 68829538 is about 8296.3569113196. The cubic root of 68829538 is about 409.8185554467.

The spelling of 68829538 in words is "sixty-eight million, eight hundred twenty-nine thousand, five hundred thirty-eight".