2663404065 has 48 divisors (see below), whose sum is σ = 5508005760. Its totient is φ = 1217553120.

The previous prime is 2663404063. The next prime is 2663404069. The reversal of 2663404065 is 5604043662.

It is not a de Polignac number, because 2663404065 - 2¹ = 2663404063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2663404061) 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, 194701 + ... + 207930.

It is an arithmetic number, because the mean of its divisors is an integer number (114750120).

Almost surely, 2^2663404065 is an apocalyptic number.

It is an amenable number.

2663404065 is an abundant number, since it is smaller than the sum of its proper divisors (2844601695).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2663404065 is a wasteful number, since it uses less digits than its factorization.

2663404065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402659 (or 402646 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 2663404065 is about 51608.1782763159. The cubic root of 2663404065 is about 1386.1567774904.

The spelling of 2663404065 in words is "two billion, six hundred sixty-three million, four hundred four thousand, sixty-five".