2061689900 has 18 divisors (see below), whose sum is σ = 4473867300. Its totient is φ = 824675920.

The previous prime is 2061689899. The next prime is 2061689947. The reversal of 2061689900 is 99861602.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10308350 + ... + 10308549.

Almost surely, 2^2061689900 is an apocalyptic number.

2061689900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2061689900 is an abundant number, since it is smaller than the sum of its proper divisors (2412177400).

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

2061689900 is a wasteful number, since it uses less digits than its factorization.

2061689900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20616913 (or 20616906 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 2061689900 is about 45405.8355280464. The cubic root of 2061689900 is about 1272.7441644171.

The spelling of 2061689900 in words is "two billion, sixty-one million, six hundred eighty-nine thousand, nine hundred".