1166621104 has 40 divisors (see below), whose sum is σ = 2490264720. Its totient is φ = 525024000.

The previous prime is 1166621087. The next prime is 1166621123. The reversal of 1166621104 is 4011266611.

It is a super-3 number, since 3×1166621104³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 15039 + ... + 50590.

It is an arithmetic number, because the mean of its divisors is an integer number (62256618).

Almost surely, 2^1166621104 is an apocalyptic number.

It is an amenable number.

1166621104 is an abundant number, since it is smaller than the sum of its proper divisors (1323643616).

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

1166621104 is a wasteful number, since it uses less digits than its factorization.

1166621104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65749 (or 65743 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1166621104 is about 34155.8355775408. The cubic root of 1166621104 is about 1052.7128951364.

Adding to 1166621104 its reverse (4011266611), we get a palindrome (5177887715).

The spelling of 1166621104 in words is "one billion, one hundred sixty-six million, six hundred twenty-one thousand, one hundred four".