1616680220 has 24 divisors (see below), whose sum is σ = 3486787584. Its totient is φ = 629194176.

The previous prime is 1616680211. The next prime is 1616680243. The reversal of 1616680220 is 220866161.

It is a super-2 number, since 2×1616680220² = 5227309867478496800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1091612 + ... + 1093091.

It is an arithmetic number, because the mean of its divisors is an integer number (145282816).

Almost surely, 2^1616680220 is an apocalyptic number.

1616680220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1616680220 is an abundant number, since it is smaller than the sum of its proper divisors (1870107364).

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

1616680220 is a wasteful number, since it uses less digits than its factorization.

1616680220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2184749 (or 2184747 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1616680220 is about 40207.9621468186. The cubic root of 1616680220 is about 1173.6574906780.

The spelling of 1616680220 in words is "one billion, six hundred sixteen million, six hundred eighty thousand, two hundred twenty".