1041406661 has 4 divisors (see below), whose sum is σ = 1056950112. Its totient is φ = 1025863212.

The previous prime is 1041406651. The next prime is 1041406687. The reversal of 1041406661 is 1666041401.

1041406661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1666041401 = 31 ⋅53743271.

It is a cyclic number.

It is not a de Polignac number, because 1041406661 - 2¹⁴ = 1041390277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1041406631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7771625 + ... + 7771758.

It is an arithmetic number, because the mean of its divisors is an integer number (264237528).

Almost surely, 2^1041406661 is an apocalyptic number.

It is an amenable number.

1041406661 is a deficient number, since it is larger than the sum of its proper divisors (15543451).

1041406661 is an equidigital number, since it uses as much as digits as its factorization.

1041406661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15543450.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1041406661 is about 32270.8329765440. The cubic root of 1041406661 is about 1013.6159838714.

The spelling of 1041406661 in words is "one billion, forty-one million, four hundred six thousand, six hundred sixty-one".