68931205 has 16 divisors (see below), whose sum is σ = 95457024. Its totient is φ = 46805760.

The previous prime is 68931167. The next prime is 68931227. The reversal of 68931205 is 50213986.

It is not a de Polignac number, because 68931205 - 2⁷ = 68931077 is a prime.

It is a super-2 number, since 2×68931205² = 9503022045504050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5956 + ... + 13165.

It is an arithmetic number, because the mean of its divisors is an integer number (5966064).

Almost surely, 2^68931205 is an apocalyptic number.

It is an amenable number.

68931205 is a deficient number, since it is larger than the sum of its proper divisors (26525819).

68931205 is a wasteful number, since it uses less digits than its factorization.

68931205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19236.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 68931205 is about 8302.4818578543. The cubic root of 68931205 is about 410.0202349720.

The spelling of 68931205 in words is "sixty-eight million, nine hundred thirty-one thousand, two hundred five".