1606561222 has 32 divisors (see below), whose sum is σ = 2793600000. Its totient is φ = 678682368.

The previous prime is 1606561211. The next prime is 1606561273. The reversal of 1606561222 is 2221656061.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 1285654 + ... + 1286902.

It is an arithmetic number, because the mean of its divisors is an integer number (87300000).

Almost surely, 2^1606561222 is an apocalyptic number.

1606561222 is a deficient number, since it is larger than the sum of its proper divisors (1187038778).

1606561222 is a wasteful number, since it uses less digits than its factorization.

1606561222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1606561222 is about 40081.9313656416. The cubic root of 1606561222 is about 1171.2036756629.

The spelling of 1606561222 in words is "one billion, six hundred six million, five hundred sixty-one thousand, two hundred twenty-two".