105760721 has 8 divisors (see below), whose sum is σ = 116956704. Its totient is φ = 94828320.

The previous prime is 105760717. The next prime is 105760729. The reversal of 105760721 is 127067501.

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 105760721 - 2² = 105760717 is a prime.

It is a super-2 number, since 2×105760721² = 22370660212879682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105760729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65051 + ... + 66656.

It is an arithmetic number, because the mean of its divisors is an integer number (14619588).

Almost surely, 2^105760721 is an apocalyptic number.

105760721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

105760721 is a deficient number, since it is larger than the sum of its proper divisors (11195983).

105760721 is a wasteful number, since it uses less digits than its factorization.

105760721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131791.

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 105760721 is about 10284.0031602484. The cubic root of 105760721 is about 472.9059747221.

The spelling of 105760721 in words is "one hundred five million, seven hundred sixty thousand, seven hundred twenty-one".