1996659856 has 15 divisors (see below), whose sum is σ = 3868874803. Its totient is φ = 998240560.

The previous prime is 1996659853. The next prime is 1996659857. The reversal of 1996659856 is 6589566991.

The square root of 1996659856 is 44684.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1996659853) 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 2 ways as a sum of consecutive naturals, for example, 173151 + ... + 184321.

Almost surely, 2^1996659856 is an apocalyptic number.

1996659856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1996659856 is the 44684-th square number.

It is an amenable number.

1996659856 is a deficient number, since it is larger than the sum of its proper divisors (1872214947).

1996659856 is an frugal number, since it uses more digits than its factorization.

1996659856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22350 (or 11173 counting only the distinct ones).

The product of its digits is 31492800, while the sum is 64.

The cubic root of 1996659856 is about 1259.2192727878.

Multiplying 1996659856 by its sum of digits (64), we get a square (127786230784 = 357472²).

The spelling of 1996659856 in words is "one billion, nine hundred ninety-six million, six hundred fifty-nine thousand, eight hundred fifty-six".