2065663480 has 64 divisors (see below), whose sum is σ = 4723272000. Its totient is φ = 812897280.

The previous prime is 2065663471. The next prime is 2065663487. The reversal of 2065663480 is 843665602.

It is a happy number.

It is a super-2 number, since 2×2065663480² = 8533931225211420800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2065663487) 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, 1748490 + ... + 1749670.

It is an arithmetic number, because the mean of its divisors is an integer number (73801125).

Almost surely, 2^2065663480 is an apocalyptic number.

2065663480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2065663480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2361636000).

2065663480 is an abundant number, since it is smaller than the sum of its proper divisors (2657608520).

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

2065663480 is a wasteful number, since it uses less digits than its factorization.

2065663480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864 (or 1860 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 2065663480 is about 45449.5707350466. The cubic root of 2065663480 is about 1273.5613104472.

The spelling of 2065663480 in words is "two billion, sixty-five million, six hundred sixty-three thousand, four hundred eighty".