68667378 has 32 divisors (see below), whose sum is σ = 148214976. Its totient is φ = 21083328.

The previous prime is 68667373. The next prime is 68667409. The reversal of 68667378 is 87376686.

It is a self number, because there is not a number n which added to its sum of digits gives 68667378.

It is not an unprimeable number, because it can be changed into a prime (68667371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68376 + ... + 69372.

It is an arithmetic number, because the mean of its divisors is an integer number (4631718).

Almost surely, 2^68667378 is an apocalyptic number.

68667378 is an abundant number, since it is smaller than the sum of its proper divisors (79547598).

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

68667378 is a wasteful number, since it uses less digits than its factorization.

68667378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1898.

The product of its digits is 2032128, while the sum is 51.

The square root of 68667378 is about 8286.5781840275. The cubic root of 68667378 is about 409.4964629421.

The spelling of 68667378 in words is "sixty-eight million, six hundred sixty-seven thousand, three hundred seventy-eight".