68191368 has 32 divisors (see below), whose sum is σ = 194832960. Its totient is φ = 19483200.

The previous prime is 68191367. The next prime is 68191423. The reversal of 68191368 is 86319186.

It is a super-2 number, since 2×68191368² = 9300125339422848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (68191367) 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, 202783 + ... + 203118.

It is an arithmetic number, because the mean of its divisors is an integer number (6088530).

Almost surely, 2^68191368 is an apocalyptic number.

It is an amenable number.

68191368 is an abundant number, since it is smaller than the sum of its proper divisors (126641592).

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

68191368 is a wasteful number, since it uses less digits than its factorization.

68191368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405917 (or 405913 counting only the distinct ones).

The product of its digits is 62208, while the sum is 42.

The square root of 68191368 is about 8257.8064884084. The cubic root of 68191368 is about 408.5480428318.

The spelling of 68191368 in words is "sixty-eight million, one hundred ninety-one thousand, three hundred sixty-eight".