106620406 has 4 divisors (see below), whose sum is σ = 159930612. Its totient is φ = 53310202.

The previous prime is 106620391. The next prime is 106620431. The reversal of 106620406 is 604026601.

It is a happy number.

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

It is a super-2 number, since 2×106620406² = 22735821951209672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 26655100 + ... + 26655103.

It is an arithmetic number, because the mean of its divisors is an integer number (39982653).

Almost surely, 2^106620406 is an apocalyptic number.

106620406 is a deficient number, since it is larger than the sum of its proper divisors (53310206).

106620406 is an equidigital number, since it uses as much as digits as its factorization.

106620406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53310205.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 106620406 is about 10325.7157621155. The cubic root of 106620406 is about 474.1838705785.

The spelling of 106620406 in words is "one hundred six million, six hundred twenty thousand, four hundred six".