1000060661 has 8 divisors (see below), whose sum is σ = 1004064600. Its totient is φ = 996065280.

The previous prime is 1000060639. The next prime is 1000060673. The reversal of 1000060661 is 1660600001.

It can be written as a sum of positive squares in 4 ways, for example, as 51051025 + 949009636 = 7145^2 + 30806^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1000060661 - 2¹⁸ = 999798517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000069661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322205 + ... + 325293.

It is an arithmetic number, because the mean of its divisors is an integer number (125508075).

Almost surely, 2^1000060661 is an apocalyptic number.

It is an amenable number.

1000060661 is a deficient number, since it is larger than the sum of its proper divisors (4003939).

1000060661 is an equidigital number, since it uses as much as digits as its factorization.

1000060661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4279.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1000060661 is about 31623.7357217644. The cubic root of 1000060661 is about 1000.0202199245.

Adding to 1000060661 its reverse (1660600001), we get a palindrome (2660660662).

The spelling of 1000060661 in words is "one billion, sixty thousand, six hundred sixty-one".