68488456 has 8 divisors (see below), whose sum is σ = 128415870. Its totient is φ = 34244224.

The previous prime is 68488423. The next prime is 68488463. The reversal of 68488456 is 65488486.

It can be written as a sum of positive squares in only one way, i.e., 65124900 + 3363556 = 8070^2 + 1834^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4280521 + ... + 4280536.

Almost surely, 2^68488456 is an apocalyptic number.

It is an amenable number.

68488456 is a deficient number, since it is larger than the sum of its proper divisors (59927414).

68488456 is a wasteful number, since it uses less digits than its factorization.

68488456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8561063 (or 8561059 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 49.

The square root of 68488456 is about 8275.7752506940. The cubic root of 68488456 is about 409.1404877226.

The spelling of 68488456 in words is "sixty-eight million, four hundred eighty-eight thousand, four hundred fifty-six".