106730215 has 4 divisors (see below), whose sum is σ = 128076264. Its totient is φ = 85384168.

The previous prime is 106730213. The next prime is 106730219. The reversal of 106730215 is 512037601.

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 106730215 - 2¹ = 106730213 is a prime.

It is a super-2 number, since 2×106730215² = 22782677587892450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 106730215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106730213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10673017 + ... + 10673026.

It is an arithmetic number, because the mean of its divisors is an integer number (32019066).

Almost surely, 2^106730215 is an apocalyptic number.

106730215 is a deficient number, since it is larger than the sum of its proper divisors (21346049).

106730215 is an equidigital number, since it uses as much as digits as its factorization.

106730215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21346048.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 106730215 is about 10331.0316522601. The cubic root of 106730215 is about 474.3466030021.

Adding to 106730215 its reverse (512037601), we get a palindrome (618767816).

The spelling of 106730215 in words is "one hundred six million, seven hundred thirty thousand, two hundred fifteen".