106647638 has 4 divisors (see below), whose sum is σ = 159971460. Its totient is φ = 53323818.

The previous prime is 106647577. The next prime is 106647659. The reversal of 106647638 is 836746601.

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

It is a super-2 number, since 2×106647638² = 22747437381958088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 106647595 and 106647604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26661908 + ... + 26661911.

It is an arithmetic number, because the mean of its divisors is an integer number (39992865).

Almost surely, 2^106647638 is an apocalyptic number.

106647638 is a deficient number, since it is larger than the sum of its proper divisors (53323822).

106647638 is an equidigital number, since it uses as much as digits as its factorization.

106647638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53323821.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 106647638 is about 10327.0343274340. The cubic root of 106647638 is about 474.2242376978.

The spelling of 106647638 in words is "one hundred six million, six hundred forty-seven thousand, six hundred thirty-eight".