1606421061 has 12 divisors (see below), whose sum is σ = 2651869792. Its totient is φ = 917954856.

The previous prime is 1606421009. The next prime is 1606421077. The reversal of 1606421061 is 1601246061.

1606421061 is a `hidden beast` number, since 1 + 6 + 0 + 642 + 10 + 6 + 1 = 666.

It is not a de Polignac number, because 1606421061 - 2¹¹ = 1606419013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1606421461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12749311 + ... + 12749436.

Almost surely, 2^1606421061 is an apocalyptic number.

It is an amenable number.

1606421061 is a deficient number, since it is larger than the sum of its proper divisors (1045448731).

1606421061 is a wasteful number, since it uses less digits than its factorization.

1606421061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25498760 (or 25498757 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1606421061 is about 40080.1828962893. The cubic root of 1606421061 is about 1171.1696149519.

The spelling of 1606421061 in words is "one billion, six hundred six million, four hundred twenty-one thousand, sixty-one".