11663020 has 24 divisors (see below), whose sum is σ = 25933824. Its totient is φ = 4390656.

The previous prime is 11663011. The next prime is 11663039. The reversal of 11663020 is 2036611.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16812 + ... + 17491.

It is an arithmetic number, because the mean of its divisors is an integer number (1080576).

Almost surely, 2^11663020 is an apocalyptic number.

11663020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11663020 is an abundant number, since it is smaller than the sum of its proper divisors (14270804).

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

11663020 is a wasteful number, since it uses less digits than its factorization.

11663020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34329 (or 34327 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 11663020 is about 3415.1163962594. The cubic root of 11663020 is about 226.7794373493.

Adding to 11663020 its reverse (2036611), we get a palindrome (13699631).

It can be divided in two parts, 1166 and 3020, that added together give a triangular number (4186 = T₉₁).

The spelling of 11663020 in words is "eleven million, six hundred sixty-three thousand, twenty".