68943156 has 12 divisors (see below), whose sum is σ = 160867392. Its totient is φ = 22981048.

The previous prime is 68943151. The next prime is 68943197. The reversal of 68943156 is 65134986.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68943151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2872620 + ... + 2872643.

It is an arithmetic number, because the mean of its divisors is an integer number (13405616).

Almost surely, 2^68943156 is an apocalyptic number.

It is an amenable number.

68943156 is an abundant number, since it is smaller than the sum of its proper divisors (91924236).

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

68943156 is a wasteful number, since it uses less digits than its factorization.

68943156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5745270 (or 5745268 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 68943156 is about 8303.2015512090. The cubic root of 68943156 is about 410.0439294592.

The spelling of 68943156 in words is "sixty-eight million, nine hundred forty-three thousand, one hundred fifty-six".