11660642 has 32 divisors (see below), whose sum is σ = 21427200. Its totient is φ = 4647888.

The previous prime is 11660641. The next prime is 11660647. The reversal of 11660642 is 24606611.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (11660641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15323 + ... + 16065.

It is an arithmetic number, because the mean of its divisors is an integer number (669600).

Almost surely, 2^11660642 is an apocalyptic number.

11660642 is a deficient number, since it is larger than the sum of its proper divisors (9766558).

11660642 is a wasteful number, since it uses less digits than its factorization.

11660642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 11660642 is about 3414.7682205385. The cubic root of 11660642 is about 226.7640234412.

The spelling of 11660642 in words is "eleven million, six hundred sixty thousand, six hundred forty-two".