68539958 has 4 divisors (see below), whose sum is σ = 102809940. Its totient is φ = 34269978.

The previous prime is 68539951. The next prime is 68539969. The reversal of 68539958 is 85993586.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68539951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17134988 + ... + 17134991.

It is an arithmetic number, because the mean of its divisors is an integer number (25702485).

Almost surely, 2^68539958 is an apocalyptic number.

68539958 is a deficient number, since it is larger than the sum of its proper divisors (34269982).

68539958 is a wasteful number, since it uses less digits than its factorization.

68539958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34269981.

The product of its digits is 2332800, while the sum is 53.

The square root of 68539958 is about 8278.8862777550. The cubic root of 68539958 is about 409.2430172827.

The spelling of 68539958 in words is "sixty-eight million, five hundred thirty-nine thousand, nine hundred fifty-eight".