68121488 has 10 divisors (see below), whose sum is σ = 131985414. Its totient is φ = 34060736.

The previous prime is 68121467. The next prime is 68121497. The reversal of 68121488 is 88412186.

It can be written as a sum of positive squares in only one way, i.e., 58186384 + 9935104 = 7628^2 + 3152^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2128781 + ... + 2128812.

Almost surely, 2^68121488 is an apocalyptic number.

It is an amenable number.

68121488 is a deficient number, since it is larger than the sum of its proper divisors (63863926).

68121488 is a wasteful number, since it uses less digits than its factorization.

68121488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4257601 (or 4257595 counting only the distinct ones).

The product of its digits is 24576, while the sum is 38.

The square root of 68121488 is about 8253.5742560420. The cubic root of 68121488 is about 408.4084401434.

The spelling of 68121488 in words is "sixty-eight million, one hundred twenty-one thousand, four hundred eighty-eight".