11720573 has 4 divisors (see below), whose sum is σ = 12098688. Its totient is φ = 11342460.

The previous prime is 11720567. The next prime is 11720581. The reversal of 11720573 is 37502711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11720573 - 2⁶ = 11720509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11720773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189011 + ... + 189072.

It is an arithmetic number, because the mean of its divisors is an integer number (3024672).

Almost surely, 2^11720573 is an apocalyptic number.

It is an amenable number.

11720573 is a deficient number, since it is larger than the sum of its proper divisors (378115).

11720573 is an equidigital number, since it uses as much as digits as its factorization.

11720573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378114.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 11720573 is about 3423.5322402454. The cubic root of 11720573 is about 227.1518516652.

The spelling of 11720573 in words is "eleven million, seven hundred twenty thousand, five hundred seventy-three".