106782387 has 4 divisors (see below), whose sum is σ = 142376520. Its totient is φ = 71188256.

The previous prime is 106782371. The next prime is 106782397. The reversal of 106782387 is 783287601.

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

It is a cyclic number.

It is not a de Polignac number, because 106782387 - 2⁴ = 106782371 is a prime.

It is a super-2 number, since 2×106782387² = 22804956346835538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (106782397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17797062 + ... + 17797067.

It is an arithmetic number, because the mean of its divisors is an integer number (35594130).

Almost surely, 2^106782387 is an apocalyptic number.

106782387 is a deficient number, since it is larger than the sum of its proper divisors (35594133).

106782387 is an equidigital number, since it uses as much as digits as its factorization.

106782387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35594132.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 106782387 is about 10333.5563578083. The cubic root of 106782387 is about 474.4238806493.

The spelling of 106782387 in words is "one hundred six million, seven hundred eighty-two thousand, three hundred eighty-seven".