1000004661 has 12 divisors (see below), whose sum is σ = 1483490892. Its totient is φ = 648651456.

The previous prime is 1000004647. The next prime is 1000004693. The reversal of 1000004661 is 1664000001.

1000004661 is a `hidden beast` number, since 1 + 0 + 0 + 0 + 0 + 0 + 4 + 661 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 390852900 + 609151761 = 19770^2 + 24681^2 .

It is not a de Polignac number, because 1000004661 - 2¹³ = 999996469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000004611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1501176 + ... + 1501841.

It is an arithmetic number, because the mean of its divisors is an integer number (123624241).

Almost surely, 2^1000004661 is an apocalyptic number.

It is an amenable number.

1000004661 is a deficient number, since it is larger than the sum of its proper divisors (483486231).

1000004661 is a wasteful number, since it uses less digits than its factorization.

1000004661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3003060 (or 3003057 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1000004661 is about 31622.8502984788. The cubic root of 1000004661 is about 1000.0015536643.

Adding to 1000004661 its reverse (1664000001), we get a palindrome (2664004662).

The spelling of 1000004661 in words is "one billion, four thousand, six hundred sixty-one".