106719785 has 4 divisors (see below), whose sum is σ = 128063748. Its totient is φ = 85375824.

The previous prime is 106719779. The next prime is 106719787. The reversal of 106719785 is 587917601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 587917601 = 487 ⋅1207223.

It can be written as a sum of positive squares in 2 ways, for example, as 75672601 + 31047184 = 8699^2 + 5572^2 .

It is a cyclic number.

It is not a de Polignac number, because 106719785 - 2¹² = 106715689 is a prime.

It is a super-2 number, since 2×106719785² = 22778225020892450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (106719787) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 10671974 + ... + 10671983.

It is an arithmetic number, because the mean of its divisors is an integer number (32015937).

Almost surely, 2^106719785 is an apocalyptic number.

It is an amenable number.

106719785 is a deficient number, since it is larger than the sum of its proper divisors (21343963).

106719785 is an equidigital number, since it uses as much as digits as its factorization.

106719785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21343962.

The product of its (nonzero) digits is 105840, while the sum is 44.

The square root of 106719785 is about 10330.5268500692. The cubic root of 106719785 is about 474.3311509697.

The spelling of 106719785 in words is "one hundred six million, seven hundred nineteen thousand, seven hundred eighty-five".