1648685061 has 12 divisors (see below), whose sum is σ = 2463552780. Its totient is φ = 1061222400.

The previous prime is 1648685047. The next prime is 1648685063. The reversal of 1648685061 is 1605868461.

1648685061 is a `hidden beast` number, since 1 + 64 + 86 + 8 + 506 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 598536225 + 1050148836 = 24465^2 + 32406^2 .

It is not a de Polignac number, because 1648685061 - 2¹⁴ = 1648668677 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1648684998 and 1648685016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1648685063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3158140 + ... + 3158661.

It is an arithmetic number, because the mean of its divisors is an integer number (205296065).

Almost surely, 2^1648685061 is an apocalyptic number.

It is an amenable number.

1648685061 is a deficient number, since it is larger than the sum of its proper divisors (814867719).

1648685061 is a wasteful number, since it uses less digits than its factorization.

1648685061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6316836 (or 6316833 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 1648685061 is about 40604.0030169440. The cubic root of 1648685061 is about 1181.3517643410.

The spelling of 1648685061 in words is "one billion, six hundred forty-eight million, six hundred eighty-five thousand, sixty-one".