10720660 has 24 divisors (see below), whose sum is σ = 22576680. Its totient is φ = 4276224.

The previous prime is 10720627. The next prime is 10720663. The reversal of 10720660 is 6602701.

It can be written as a sum of positive squares in 4 ways, for example, as 1258884 + 9461776 = 1122^2 + 3076^2 .

It is a super-2 number, since 2×10720660² = 229865101671200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10720663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11076 + ... + 12004.

It is an arithmetic number, because the mean of its divisors is an integer number (940695).

Almost surely, 2^10720660 is an apocalyptic number.

10720660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10720660 is an abundant number, since it is smaller than the sum of its proper divisors (11856020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10720660 is a wasteful number, since it uses less digits than its factorization.

10720660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515 (or 1513 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 10720660 is about 3274.2418969893. The cubic root of 10720660 is about 220.4992792760.

The spelling of 10720660 in words is "ten million, seven hundred twenty thousand, six hundred sixty".