1013604665 has 16 divisors (see below), whose sum is σ = 1288964880. Its totient is φ = 763822080.

The previous prime is 1013604661. The next prime is 1013604667. The reversal of 1013604665 is 5664063101.

1013604665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 203689984 + 809914681 = 14272^2 + 28459^2 .

It is not a de Polignac number, because 1013604665 - 2² = 1013604661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1013604661) 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, 79304 + ... + 91193.

It is an arithmetic number, because the mean of its divisors is an integer number (80560305).

Almost surely, 2^1013604665 is an apocalyptic number.

It is an amenable number.

1013604665 is a deficient number, since it is larger than the sum of its proper divisors (275360215).

1013604665 is a wasteful number, since it uses less digits than its factorization.

1013604665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170572.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 1013604665 is about 31837.1585572582. The cubic root of 1013604665 is about 1004.5144771602.

Adding to 1013604665 its reverse (5664063101), we get a palindrome (6677667766).

The spelling of 1013604665 in words is "one billion, thirteen million, six hundred four thousand, six hundred sixty-five".