1020563465 has 16 divisors (see below), whose sum is σ = 1299691008. Its totient is φ = 766661376.

The previous prime is 1020563459. The next prime is 1020563561. The reversal of 1020563465 is 5643650201.

It is not a de Polignac number, because 1020563465 - 2⁸ = 1020563209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24104 + ... + 51206.

It is an arithmetic number, because the mean of its divisors is an integer number (81230688).

Almost surely, 2^1020563465 is an apocalyptic number.

It is an amenable number.

1020563465 is a deficient number, since it is larger than the sum of its proper divisors (279127543).

1020563465 is a wasteful number, since it uses less digits than its factorization.

1020563465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27568.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 1020563465 is about 31946.2590141631. The cubic root of 1020563465 is about 1006.8080338262.

The spelling of 1020563465 in words is "one billion, twenty million, five hundred sixty-three thousand, four hundred sixty-five".