1566312340 has 48 divisors (see below), whose sum is σ = 3567718224. Its totient is φ = 575283200.

The previous prime is 1566312337. The next prime is 1566312347. The reversal of 1566312340 is 432136651.

It can be written as a sum of positive squares in 8 ways, for example, as 298667524 + 1267644816 = 17282^2 + 35604^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1566312347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42241 + ... + 70120.

It is an arithmetic number, because the mean of its divisors is an integer number (74327463).

Almost surely, 2^1566312340 is an apocalyptic number.

1566312340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1566312340 is an abundant number, since it is smaller than the sum of its proper divisors (2001405884).

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

1566312340 is a wasteful number, since it uses less digits than its factorization.

1566312340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112428 (or 112426 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 1566312340 is about 39576.6640837754. The cubic root of 1566312340 is about 1161.3401920120.

Adding to 1566312340 its reverse (432136651), we get a palindrome (1998448991).

The spelling of 1566312340 in words is "one billion, five hundred sixty-six million, three hundred twelve thousand, three hundred forty".