68288456 has 16 divisors (see below), whose sum is σ = 135572940. Its totient is φ = 32135680.

The previous prime is 68288431. The next prime is 68288459. The reversal of 68288456 is 65488286.

It can be written as a sum of positive squares in 2 ways, for example, as 66422500 + 1865956 = 8150^2 + 1366^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68288456.

It is not an unprimeable number, because it can be changed into a prime (68288459) 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, 250925 + ... + 251196.

Almost surely, 2^68288456 is an apocalyptic number.

It is an amenable number.

68288456 is a deficient number, since it is larger than the sum of its proper divisors (67284484).

68288456 is a wasteful number, since it uses less digits than its factorization.

68288456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502144 (or 502140 counting only the distinct ones).

The product of its digits is 737280, while the sum is 47.

The square root of 68288456 is about 8263.6829561643. The cubic root of 68288456 is about 408.7418420565.

The spelling of 68288456 in words is "sixty-eight million, two hundred eighty-eight thousand, four hundred fifty-six".