106446721 has 8 divisors (see below), whose sum is σ = 112236320. Its totient is φ = 100675872.

The previous prime is 106446677. The next prime is 106446763. The reversal of 106446721 is 127644601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 106446721 - 2¹⁵ = 106413953 is a prime.

It is a super-2 number, since 2×106446721² = 22661808823303682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106440721) 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 7 ways as a sum of consecutive naturals, for example, 7861 + ... + 16573.

It is an arithmetic number, because the mean of its divisors is an integer number (14029540).

Almost surely, 2^106446721 is an apocalyptic number.

It is an amenable number.

106446721 is a deficient number, since it is larger than the sum of its proper divisors (5789599).

106446721 is an equidigital number, since it uses as much as digits as its factorization.

106446721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9375.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 106446721 is about 10317.3020213620. The cubic root of 106446721 is about 473.9262482652.

The spelling of 106446721 in words is "one hundred six million, four hundred forty-six thousand, seven hundred twenty-one".