11667745 has 4 divisors (see below), whose sum is σ = 14001300. Its totient is φ = 9334192.

The previous prime is 11667731. The next prime is 11667793. The reversal of 11667745 is 54776611.

11667745 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7639696 + 4028049 = 2764^2 + 2007^2 .

It is a cyclic number.

It is not a de Polignac number, because 11667745 - 2⁵ = 11667713 is a prime.

It is a super-2 number, since 2×11667745² = 272272546770050, which contains 22 as substring.

It is a plaindrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1166770 + ... + 1166779.

It is an arithmetic number, because the mean of its divisors is an integer number (3500325).

Almost surely, 2^11667745 is an apocalyptic number.

It is an amenable number.

11667745 is a deficient number, since it is larger than the sum of its proper divisors (2333555).

11667745 is an equidigital number, since it uses as much as digits as its factorization.

11667745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2333554.

The product of its digits is 35280, while the sum is 37.

The square root of 11667745 is about 3415.8081035093. The cubic root of 11667745 is about 226.8100580111.

It can be divided in two parts, 1166 and 7745, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 11667745 in words is "eleven million, six hundred sixty-seven thousand, seven hundred forty-five".