10720505 has 8 divisors (see below), whose sum is σ = 12882624. Its totient is φ = 8564400.

The previous prime is 10720487. The next prime is 10720511. The reversal of 10720505 is 50502701.

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

It is not a de Polignac number, because 10720505 - 2⁸ = 10720249 is a prime.

It is a super-2 number, since 2×10720505² = 229858454910050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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, 4940 + ... + 6770.

It is an arithmetic number, because the mean of its divisors is an integer number (1610328).

Almost surely, 2^10720505 is an apocalyptic number.

It is an amenable number.

10720505 is a deficient number, since it is larger than the sum of its proper divisors (2162119).

10720505 is a wasteful number, since it uses less digits than its factorization.

10720505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3007.

The product of its (nonzero) digits is 350, while the sum is 20.

The square root of 10720505 is about 3274.2182273025. The cubic root of 10720505 is about 220.4982166066.

The spelling of 10720505 in words is "ten million, seven hundred twenty thousand, five hundred five".