68521798 has 8 divisors (see below), whose sum is σ = 108828792. Its totient is φ = 32245536.

The previous prime is 68521793. The next prime is 68521801. The reversal of 68521798 is 89712586.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68521793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1007640 + ... + 1007707.

It is an arithmetic number, because the mean of its divisors is an integer number (13603599).

Almost surely, 2^68521798 is an apocalyptic number.

68521798 is a deficient number, since it is larger than the sum of its proper divisors (40306994).

68521798 is a wasteful number, since it uses less digits than its factorization.

68521798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015366.

The product of its digits is 241920, while the sum is 46.

The square root of 68521798 is about 8277.7894392162. The cubic root of 68521798 is about 409.2068704380.

The spelling of 68521798 in words is "sixty-eight million, five hundred twenty-one thousand, seven hundred ninety-eight".