1065002561 has 16 divisors (see below), whose sum is σ = 1251519360. Its totient is φ = 887137920.

The previous prime is 1065002537. The next prime is 1065002581. The reversal of 1065002561 is 1652005601.

It is a cyclic number.

It is not a de Polignac number, because 1065002561 - 2¹⁰ = 1065001537 is a prime.

It is a super-2 number, since 2×1065002561² = 2268460909873117442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1065002561.

It is not an unprimeable number, because it can be changed into a prime (1065002581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280685 + ... + 284453.

It is an arithmetic number, because the mean of its divisors is an integer number (78219960).

Almost surely, 2^1065002561 is an apocalyptic number.

It is an amenable number.

1065002561 is a deficient number, since it is larger than the sum of its proper divisors (186516799).

1065002561 is a wasteful number, since it uses less digits than its factorization.

1065002561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4904.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1065002561 is about 32634.3769819496. The cubic root of 1065002561 is about 1021.2142916911.

The spelling of 1065002561 in words is "one billion, sixty-five million, two thousand, five hundred sixty-one".