106944721 has 12 divisors (see below), whose sum is σ = 119802780. Its totient is φ = 95309760.

The previous prime is 106944709. The next prime is 106944737. The reversal of 106944721 is 127449601.

It can be written as a sum of positive squares in 6 ways, for example, as 11296321 + 95648400 = 3361^2 + 9780^2 .

It is not a de Polignac number, because 106944721 - 2¹¹ = 106942673 is a prime.

It is a super-2 number, since 2×106944721² = 22874346699535682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106944701) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6010 + ... + 15811.

It is an arithmetic number, because the mean of its divisors is an integer number (9983565).

Almost surely, 2^106944721 is an apocalyptic number.

It is an amenable number.

106944721 is a deficient number, since it is larger than the sum of its proper divisors (12858059).

106944721 is a wasteful number, since it uses less digits than its factorization.

106944721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21876 (or 21863 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 106944721 is about 10341.4080762728. The cubic root of 106944721 is about 474.6641703774.

The spelling of 106944721 in words is "one hundred six million, nine hundred forty-four thousand, seven hundred twenty-one".