106688378 has 4 divisors (see below), whose sum is σ = 160032570. Its totient is φ = 53344188.

The previous prime is 106688377. The next prime is 106688381. The reversal of 106688378 is 873886601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 104387089 + 2301289 = 10217^2 + 1517^2 .

It is a super-2 number, since 2×106688378² = 22764820000541768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (106688371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26672093 + ... + 26672096.

Almost surely, 2^106688378 is an apocalyptic number.

106688378 is a deficient number, since it is larger than the sum of its proper divisors (53344192).

106688378 is an equidigital number, since it uses as much as digits as its factorization.

106688378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53344191.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 106688378 is about 10329.0066318112. The cubic root of 106688378 is about 474.2846154558.

The spelling of 106688378 in words is "one hundred six million, six hundred eighty-eight thousand, three hundred seventy-eight".