1026616563 has 48 divisors (see below), whose sum is σ = 1716289536. Its totient is φ = 579234240.

The previous prime is 1026616561. The next prime is 1026616597. The reversal of 1026616563 is 3656166201.

1026616563 is a `hidden beast` number, since 10 + 26 + 61 + 6 + 563 = 666.

It is not a de Polignac number, because 1026616563 - 2¹ = 1026616561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1026616561) 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, 2680270 + ... + 2680652.

It is an arithmetic number, because the mean of its divisors is an integer number (35756032).

Almost surely, 2^1026616563 is an apocalyptic number.

1026616563 is a deficient number, since it is larger than the sum of its proper divisors (689672973).

1026616563 is a wasteful number, since it uses less digits than its factorization.

1026616563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824 (or 821 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 1026616563 is about 32040.8577132386. The cubic root of 1026616563 is about 1008.7946156614.

The spelling of 1026616563 in words is "one billion, twenty-six million, six hundred sixteen thousand, five hundred sixty-three".