68781458 has 8 divisors (see below), whose sum is σ = 103265280. Its totient is φ = 34359700.

The previous prime is 68781413. The next prime is 68781487. The reversal of 68781458 is 85418786.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12638 + ... + 17241.

It is an arithmetic number, because the mean of its divisors is an integer number (12908160).

Almost surely, 2^68781458 is an apocalyptic number.

68781458 is a deficient number, since it is larger than the sum of its proper divisors (34483822).

68781458 is a wasteful number, since it uses less digits than its factorization.

68781458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31032.

The product of its digits is 430080, while the sum is 47.

The square root of 68781458 is about 8293.4587477120. The cubic root of 68781458 is about 409.7231087024.

The spelling of 68781458 in words is "sixty-eight million, seven hundred eighty-one thousand, four hundred fifty-eight".