1606421063 has 32 divisors (see below), whose sum is σ = 1853429760. Its totient is φ = 1380084480.

The previous prime is 1606421009. The next prime is 1606421077. The reversal of 1606421063 is 3601246061.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1606421063 - 2⁸ = 1606420807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1606421963) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5927618 + ... + 5927888.

It is an arithmetic number, because the mean of its divisors is an integer number (57919680).

Almost surely, 2^1606421063 is an apocalyptic number.

1606421063 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1606421063 is a deficient number, since it is larger than the sum of its proper divisors (247008697).

1606421063 is a wasteful number, since it uses less digits than its factorization.

1606421063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1606421063 is about 40080.1829212393. The cubic root of 1606421063 is about 1171.1696154379.

The spelling of 1606421063 in words is "one billion, six hundred six million, four hundred twenty-one thousand, sixty-three".