1166724640 has 48 divisors (see below), whose sum is σ = 2901467520. Its totient is φ = 442126080.

The previous prime is 1166724571. The next prime is 1166724701. The reversal of 1166724640 is 464276611.

It is a super-2 number, since 2×1166724640² = 2722492771166259200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1166724640.

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, 188856 + ... + 194935.

It is an arithmetic number, because the mean of its divisors is an integer number (60447240).

Almost surely, 2^1166724640 is an apocalyptic number.

1166724640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1166724640 is an abundant number, since it is smaller than the sum of its proper divisors (1734742880).

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

1166724640 is a wasteful number, since it uses less digits than its factorization.

1166724640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383825 (or 383817 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 1166724640 is about 34157.3511853598. The cubic root of 1166724640 is about 1052.7440364835.

The spelling of 1166724640 in words is "one billion, one hundred sixty-six million, seven hundred twenty-four thousand, six hundred forty".