68306658 has 32 divisors (see below), whose sum is σ = 161516160. Its totient is φ = 18842880.

The previous prime is 68306633. The next prime is 68306659. The reversal of 68306658 is 85660386.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68306659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26823 + ... + 29258.

It is an arithmetic number, because the mean of its divisors is an integer number (5047380).

Almost surely, 2^68306658 is an apocalyptic number.

68306658 is an abundant number, since it is smaller than the sum of its proper divisors (93209502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68306658 is a wasteful number, since it uses less digits than its factorization.

68306658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56122.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 68306658 is about 8264.7842077092. The cubic root of 68306658 is about 408.7781549685.

The spelling of 68306658 in words is "sixty-eight million, three hundred six thousand, six hundred fifty-eight".