1047065565 has 48 divisors (see below), whose sum is σ = 2098752768. Its totient is φ = 441834624.

The previous prime is 1047065563. The next prime is 1047065573. The reversal of 1047065565 is 5655607401.

It is not a de Polignac number, because 1047065565 - 2¹ = 1047065563 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1047065563) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45237 + ... + 64346.

It is an arithmetic number, because the mean of its divisors is an integer number (43724016).

Almost surely, 2^1047065565 is an apocalyptic number.

1047065565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1047065565 is an abundant number, since it is smaller than the sum of its proper divisors (1051687203).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1047065565 is a wasteful number, since it uses less digits than its factorization.

1047065565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109618 (or 109611 counting only the distinct ones).

The product of its (nonzero) digits is 126000, while the sum is 39.

The square root of 1047065565 is about 32358.3924971560. The cubic root of 1047065565 is about 1015.4486324312.

The spelling of 1047065565 in words is "one billion, forty-seven million, sixty-five thousand, five hundred sixty-five".