68191364 has 12 divisors (see below), whose sum is σ = 122245788. Its totient is φ = 33264000.

The previous prime is 68191349. The next prime is 68191367. The reversal of 68191364 is 46319186.

It can be written as a sum of positive squares in 2 ways, for example, as 1638400 + 66552964 = 1280^2 + 8158^2 .

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 3 ways as a sum of consecutive naturals, for example, 207737 + ... + 208064.

It is an arithmetic number, because the mean of its divisors is an integer number (10187149).

Almost surely, 2^68191364 is an apocalyptic number.

It is an amenable number.

68191364 is a deficient number, since it is larger than the sum of its proper divisors (54054424).

68191364 is a wasteful number, since it uses less digits than its factorization.

68191364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415846 (or 415844 counting only the distinct ones).

The product of its digits is 31104, while the sum is 38.

The square root of 68191364 is about 8257.8062462133. The cubic root of 68191364 is about 408.5480348435.

The spelling of 68191364 in words is "sixty-eight million, one hundred ninety-one thousand, three hundred sixty-four".