1606066979 has 12 divisors (see below), whose sum is σ = 1849145400. Its totient is φ = 1383212160.

The previous prime is 1606066937. The next prime is 1606066981. The reversal of 1606066979 is 9796606061.

It is a happy number.

It is not a de Polignac number, because 1606066979 - 2⁸ = 1606066723 is a prime.

It is a super-2 number, since 2×1606066979² = 5158902282068372882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1606062979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 198254 + ... + 206195.

It is an arithmetic number, because the mean of its divisors is an integer number (154095450).

Almost surely, 2^1606066979 is an apocalyptic number.

1606066979 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1606066979 is a deficient number, since it is larger than the sum of its proper divisors (243078421).

1606066979 is a wasteful number, since it uses less digits than its factorization.

1606066979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404498 (or 404479 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 50.

The square root of 1606066979 is about 40075.7654823960. The cubic root of 1606066979 is about 1171.0835601888.

The spelling of 1606066979 in words is "one billion, six hundred six million, sixty-six thousand, nine hundred seventy-nine".