68306458 has 32 divisors (see below), whose sum is σ = 118599552. Its totient is φ = 29198400.

The previous prime is 68306431. The next prime is 68306467. The reversal of 68306458 is 85460386.

It is a self number, because there is not a number n which added to its sum of digits gives 68306458.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29760 + ... + 31972.

It is an arithmetic number, because the mean of its divisors is an integer number (3706236).

Almost surely, 2^68306458 is an apocalyptic number.

68306458 is a deficient number, since it is larger than the sum of its proper divisors (50293094).

68306458 is a wasteful number, since it uses less digits than its factorization.

68306458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2310.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 68306458 is about 8264.7721081709. The cubic root of 68306458 is about 408.7777560044. Note that the first 4 decimals are identical.

The spelling of 68306458 in words is "sixty-eight million, three hundred six thousand, four hundred fifty-eight".