1656346568 has 12 divisors (see below), whose sum is σ = 3105865665. Its totient is φ = 828115728.

The previous prime is 1656346553. The next prime is 1656346579. The reversal of 1656346568 is 8656436561.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 1574661124 + 81685444 = 39682^2 + 9038^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=28778.

It is a Duffinian number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 107918 + ... + 122306.

Almost surely, 2^1656346568 is an apocalyptic number.

It is an amenable number.

1656346568 is a deficient number, since it is larger than the sum of its proper divisors (1449519097).

1656346568 is an frugal number, since it uses more digits than its factorization.

1656346568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28784 (or 14391 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 50.

The square root of 1656346568 is about 40698.2378979729. The cubic root of 1656346568 is about 1183.1788670602.

Multiplying 1656346568 by its sum of digits (50), we get a square (82817328400 = 287780²).

The spelling of 1656346568 in words is "one billion, six hundred fifty-six million, three hundred forty-six thousand, five hundred sixty-eight".