1005566601 has 16 divisors (see below), whose sum is σ = 1506669696. Its totient is φ = 591904896.

The previous prime is 1005566593. The next prime is 1005566651. The reversal of 1005566601 is 1066655001.

It is not a de Polignac number, because 1005566601 - 2³ = 1005566593 is a prime.

It is a super-2 number, since 2×1005566601² = 2022328378093386402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1005566651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 559620 + ... + 561413.

It is an arithmetic number, because the mean of its divisors is an integer number (94166856).

Almost surely, 2^1005566601 is an apocalyptic number.

It is an amenable number.

1005566601 is a deficient number, since it is larger than the sum of its proper divisors (501103095).

1005566601 is a wasteful number, since it uses less digits than its factorization.

1005566601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121072.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 1005566601 is about 31710.6701442905. The cubic root of 1005566601 is about 1001.8521012698.

The spelling of 1005566601 in words is "one billion, five million, five hundred sixty-six thousand, six hundred one".