2000645555 has 8 divisors (see below), whose sum is σ = 2401702272. Its totient is φ = 1599898048.

The previous prime is 2000645551. The next prime is 2000645681. The reversal of 2000645555 is 5555460002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2000645555 - 2² = 2000645551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2000645551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62819 + ... + 89148.

It is an arithmetic number, because the mean of its divisors is an integer number (300212784).

Almost surely, 2^2000645555 is an apocalyptic number.

2000645555 is a deficient number, since it is larger than the sum of its proper divisors (401056717).

2000645555 is a wasteful number, since it uses less digits than its factorization.

2000645555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154605.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 2000645555 is about 44728.5764919922. The cubic root of 2000645555 is about 1260.0565933680.

The spelling of 2000645555 in words is "two billion, six hundred forty-five thousand, five hundred fifty-five".