68156814 has 16 divisors (see below), whose sum is σ = 148705920. Its totient is φ = 20653560.

The previous prime is 68156813. The next prime is 68156821. The reversal of 68156814 is 41865186.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68156813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 516274 + ... + 516405.

It is an arithmetic number, because the mean of its divisors is an integer number (9294120).

Almost surely, 2^68156814 is an apocalyptic number.

68156814 is an abundant number, since it is smaller than the sum of its proper divisors (80549106).

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

68156814 is a wasteful number, since it uses less digits than its factorization.

68156814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032695.

The product of its digits is 46080, while the sum is 39.

The square root of 68156814 is about 8255.7140212098. The cubic root of 68156814 is about 408.4790245449.

The spelling of 68156814 in words is "sixty-eight million, one hundred fifty-six thousand, eight hundred fourteen".