802608561 has 16 divisors (see below), whose sum is σ = 1190755200. Its totient is φ = 534304944.

The previous prime is 802608559. The next prime is 802608563. The reversal of 802608561 is 165806208.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (802608559) and next prime (802608563).

It is not a de Polignac number, because 802608561 - 2¹ = 802608559 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (802608563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1821 + ... + 40106.

It is an arithmetic number, because the mean of its divisors is an integer number (74422200).

Almost surely, 2^802608561 is an apocalyptic number.

It is an amenable number.

802608561 is a deficient number, since it is larger than the sum of its proper divisors (388146639).

802608561 is a wasteful number, since it uses less digits than its factorization.

802608561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42645 (or 42639 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 802608561 is about 28330.3469975219. The cubic root of 802608561 is about 929.3256610018.

The spelling of 802608561 in words is "eight hundred two million, six hundred eight thousand, five hundred sixty-one".