11620566 has 24 divisors (see below), whose sum is σ = 26273520. Its totient is φ = 3704976.

The previous prime is 11620559. The next prime is 11620573. The reversal of 11620566 is 66502611.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11620559) and next prime (11620573).

It is a super-4 number, since 4×11620566⁴ (a number of 29 digits) contains 4444 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13621 + ... + 14448.

It is an arithmetic number, because the mean of its divisors is an integer number (1094730).

Almost surely, 2^11620566 is an apocalyptic number.

11620566 is an abundant number, since it is smaller than the sum of its proper divisors (14652954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11620566 is a wasteful number, since it uses less digits than its factorization.

11620566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28100 (or 28097 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 11620566 is about 3408.8951289237. The cubic root of 11620566 is about 226.5039398171.

The spelling of 11620566 in words is "eleven million, six hundred twenty thousand, five hundred sixty-six".