11720347 has 4 divisors (see below), whose sum is σ = 11861640. Its totient is φ = 11579056.

The previous prime is 11720323. The next prime is 11720353. The reversal of 11720347 is 74302711.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11720347 - 2¹⁵ = 11687579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11720047) 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, 70522 + ... + 70687.

It is an arithmetic number, because the mean of its divisors is an integer number (2965410).

Almost surely, 2^11720347 is an apocalyptic number.

11720347 is a deficient number, since it is larger than the sum of its proper divisors (141293).

11720347 is an equidigital number, since it uses as much as digits as its factorization.

11720347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141292.

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 11720347 is about 3423.4992332407. The cubic root of 11720347 is about 227.1503916499.

The spelling of 11720347 in words is "eleven million, seven hundred twenty thousand, three hundred forty-seven".