68817156 has 24 divisors (see below), whose sum is σ = 170019360. Its totient is φ = 21589632.

The previous prime is 68817149. The next prime is 68817163. The reversal of 68817156 is 65171886.

It is an interprime number because it is at equal distance from previous prime (68817149) and next prime (68817163).

It is a super-3 number, since 3×68817156³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168466 + ... + 168873.

It is an arithmetic number, because the mean of its divisors is an integer number (7084140).

Almost surely, 2^68817156 is an apocalyptic number.

It is an amenable number.

68817156 is an abundant number, since it is smaller than the sum of its proper divisors (101202204).

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

68817156 is a wasteful number, since it uses less digits than its factorization.

68817156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337363 (or 337361 counting only the distinct ones).

The product of its digits is 80640, while the sum is 42.

The square root of 68817156 is about 8295.6106466010. The cubic root of 68817156 is about 409.7939793814.

The spelling of 68817156 in words is "sixty-eight million, eight hundred seventeen thousand, one hundred fifty-six".