11507666 has 8 divisors (see below), whose sum is σ = 17728140. Its totient is φ = 5598288.

The previous prime is 11507663. The next prime is 11507669. The reversal of 11507666 is 66670511.

It is an interprime number because it is at equal distance from previous prime (11507663) and next prime (11507669).

It can be written as a sum of positive squares in 2 ways, for example, as 10465225 + 1042441 = 3235^2 + 1021^2 .

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

It is not an unprimeable number, because it can be changed into a prime (11507663) 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, 77681 + ... + 77828.

Almost surely, 2^11507666 is an apocalyptic number.

11507666 is a deficient number, since it is larger than the sum of its proper divisors (6220474).

11507666 is a wasteful number, since it uses less digits than its factorization.

11507666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155548.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 11507666 is about 3392.2950932960. The cubic root of 11507666 is about 225.7680157986.

The spelling of 11507666 in words is "eleven million, five hundred seven thousand, six hundred sixty-six".