68155210 has 32 divisors (see below), whose sum is σ = 135551232. Its totient is φ = 24541440.

The previous prime is 68155183. The next prime is 68155211. The reversal of 68155210 is 1255186.

It is not an unprimeable number, because it can be changed into a prime (68155211) 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, 4806 + ... + 12625.

It is an arithmetic number, because the mean of its divisors is an integer number (4235976).

Almost surely, 2^68155210 is an apocalyptic number.

68155210 is a deficient number, since it is larger than the sum of its proper divisors (67396022).

68155210 is a wasteful number, since it uses less digits than its factorization.

68155210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17478.

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 68155210 is about 8255.6168758004. The cubic root of 68155210 is about 408.4758201429.

The spelling of 68155210 in words is "sixty-eight million, one hundred fifty-five thousand, two hundred ten".