1165724866 has 8 divisors (see below), whose sum is σ = 1750616064. Its totient is φ = 582186180.

The previous prime is 1165724821. The next prime is 1165724881. The reversal of 1165724866 is 6684275611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335970 + ... + 339421.

It is an arithmetic number, because the mean of its divisors is an integer number (218827008).

Almost surely, 2^1165724866 is an apocalyptic number.

1165724866 is a deficient number, since it is larger than the sum of its proper divisors (584891198).

1165724866 is an equidigital number, since it uses as much as digits as its factorization.

1165724866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676256.

The product of its digits is 483840, while the sum is 46.

The square root of 1165724866 is about 34142.7132196608. The cubic root of 1165724866 is about 1052.4432494607.

The spelling of 1165724866 in words is "one billion, one hundred sixty-five million, seven hundred twenty-four thousand, eight hundred sixty-six".