68312456 has 8 divisors (see below), whose sum is σ = 128085870. Its totient is φ = 34156224.

The previous prime is 68312441. The next prime is 68312473. The reversal of 68312456 is 65421386.

It can be written as a sum of positive squares in only one way, i.e., 37332100 + 30980356 = 6110^2 + 5566^2 .

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, 4269521 + ... + 4269536.

Almost surely, 2^68312456 is an apocalyptic number.

It is an amenable number.

68312456 is a deficient number, since it is larger than the sum of its proper divisors (59773414).

68312456 is a wasteful number, since it uses less digits than its factorization.

68312456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8539063 (or 8539059 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 68312456 is about 8265.1349656252. The cubic root of 68312456 is about 408.7897205989.

The spelling of 68312456 in words is "sixty-eight million, three hundred twelve thousand, four hundred fifty-six".