1166659672 has 8 divisors (see below), whose sum is σ = 2187486900. Its totient is φ = 583329832.

The previous prime is 1166659661. The next prime is 1166659693. The reversal of 1166659672 is 2769566611.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1166659672² = 2722189580542295168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72916222 + ... + 72916237.

Almost surely, 2^1166659672 is an apocalyptic number.

It is an amenable number.

1166659672 is a deficient number, since it is larger than the sum of its proper divisors (1020827228).

1166659672 is a wasteful number, since it uses less digits than its factorization.

1166659672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145832465 (or 145832461 counting only the distinct ones).

The product of its digits is 816480, while the sum is 49.

The square root of 1166659672 is about 34156.4001616095. The cubic root of 1166659672 is about 1052.7244957561.

The spelling of 1166659672 in words is "one billion, one hundred sixty-six million, six hundred fifty-nine thousand, six hundred seventy-two".