963802561 has 4 divisors (see below), whose sum is σ = 965884672. Its totient is φ = 961720452.

The previous prime is 963802519. The next prime is 963802577. The reversal of 963802561 is 165208369.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 165208369 = 149 ⋅1108781.

It is a cyclic number.

It is not a de Polignac number, because 963802561 - 2²⁵ = 930248129 is a prime.

It is a pancake number, because a pancake can be divided into 963802561 parts by 43904 straight cuts.

It is not an unprimeable number, because it can be changed into a prime (963802361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1040361 + ... + 1041286.

It is an arithmetic number, because the mean of its divisors is an integer number (241471168).

Almost surely, 2^963802561 is an apocalyptic number.

It is an amenable number.

963802561 is a deficient number, since it is larger than the sum of its proper divisors (2082111).

963802561 is a wasteful number, since it uses less digits than its factorization.

963802561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2082110.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 963802561 is about 31045.1696886971. The cubic root of 963802561 is about 987.7856029323.

The spelling of 963802561 in words is "nine hundred sixty-three million, eight hundred two thousand, five hundred sixty-one".