1165660664 has 32 divisors (see below), whose sum is σ = 2516093280. Its totient is φ = 495919104.

The previous prime is 1165660649. The next prime is 1165660687. The reversal of 1165660664 is 4660665611.

It is a congruent number.

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, 68297 + ... + 83640.

It is an arithmetic number, because the mean of its divisors is an integer number (78627915).

Almost surely, 2^1165660664 is an apocalyptic number.

1165660664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1165660664 is an abundant number, since it is smaller than the sum of its proper divisors (1350432616).

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

1165660664 is a wasteful number, since it uses less digits than its factorization.

1165660664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152087 (or 152083 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 1165660664 is about 34141.7730060991. The cubic root of 1165660664 is about 1052.4239280913.

The spelling of 1165660664 in words is "one billion, one hundred sixty-five million, six hundred sixty thousand, six hundred sixty-four".