1606509996 has 96 divisors (see below), whose sum is σ = 4885009920. Its totient is φ = 398767104.

The previous prime is 1606509959. The next prime is 1606510007. The reversal of 1606509996 is 6999056061.

It is a Harshad number since it is a multiple of its sum of digits (51).

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 31 ways as a sum of consecutive naturals, for example, 24706 + ... + 61833.

It is an arithmetic number, because the mean of its divisors is an integer number (50885520).

Almost surely, 2^1606509996 is an apocalyptic number.

It is an amenable number.

1606509996 is an abundant number, since it is smaller than the sum of its proper divisors (3278499924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1606509996 is a wasteful number, since it uses less digits than its factorization.

1606509996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86583 (or 86581 counting only the distinct ones).

The product of its (nonzero) digits is 787320, while the sum is 51.

The square root of 1606509996 is about 40081.2923444342. The cubic root of 1606509996 is about 1171.1912273942.

It can be divided in two parts, 160 and 6509996, that added together give a palindrome (6510156).

The spelling of 1606509996 in words is "one billion, six hundred six million, five hundred nine thousand, nine hundred ninety-six".