1005666480 has 240 divisors, whose sum is σ = 4157025600. Its totient is φ = 212170752.

The previous prime is 1005666427. The next prime is 1005666509. The reversal of 1005666480 is 846665001.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×1005666480² = 2022730137991180800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57846 + ... + 73194.

It is an arithmetic number, because the mean of its divisors is an integer number (17320940).

Almost surely, 2^1005666480 is an apocalyptic number.

1005666480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1005666480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2078512800).

1005666480 is an abundant number, since it is smaller than the sum of its proper divisors (3151359120).

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

1005666480 is a wasteful number, since it uses less digits than its factorization.

1005666480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15388 (or 15379 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1005666480 is about 31712.2449536453. The cubic root of 1005666480 is about 1001.8852701894.

The spelling of 1005666480 in words is "one billion, five million, six hundred sixty-six thousand, four hundred eighty".