2066582440 has 32 divisors (see below), whose sum is σ = 5007489480. Its totient is φ = 763045632.

The previous prime is 2066582437. The next prime is 2066582447. The reversal of 2066582440 is 442856602.

It can be written as a sum of positive squares in 4 ways, for example, as 1394424964 + 672157476 = 37342^2 + 25926^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2066582440.

It is not an unprimeable number, because it can be changed into a prime (2066582447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1986579 + ... + 1987618.

Almost surely, 2^2066582440 is an apocalyptic number.

2066582440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2066582440 is an abundant number, since it is smaller than the sum of its proper divisors (2940907040).

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

2066582440 is a wasteful number, since it uses less digits than its factorization.

2066582440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3974221 (or 3974217 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 37.

The square root of 2066582440 is about 45459.6792773552. The cubic root of 2066582440 is about 1273.7501405580.

The spelling of 2066582440 in words is "two billion, sixty-six million, five hundred eighty-two thousand, four hundred forty".