68080456 has 8 divisors (see below), whose sum is σ = 127650870. Its totient is φ = 34040224.

The previous prime is 68080451. The next prime is 68080471. The reversal of 68080456 is 65408086.

It can be written as a sum of positive squares in only one way, i.e., 68062500 + 17956 = 8250^2 + 134^2 .

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

It is not an unprimeable number, because it can be changed into a prime (68080451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4255021 + ... + 4255036.

Almost surely, 2^68080456 is an apocalyptic number.

It is an amenable number.

68080456 is a deficient number, since it is larger than the sum of its proper divisors (59570414).

68080456 is a wasteful number, since it uses less digits than its factorization.

68080456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8510063 (or 8510059 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 68080456 is about 8251.0881706597. The cubic root of 68080456 is about 408.3264240212.

The spelling of 68080456 in words is "sixty-eight million, eighty thousand, four hundred fifty-six".