2006645733 has 12 divisors (see below), whose sum is σ = 2905096480. Its totient is φ = 1334713896.

The previous prime is 2006645687. The next prime is 2006645747. The reversal of 2006645733 is 3375466002.

2006645733 is a `hidden beast` number, since 2 + 0 + 0 + 6 + 645 + 7 + 3 + 3 = 666.

It is not a de Polignac number, because 2006645733 - 2¹⁰ = 2006644709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2006645033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 249991 + ... + 257892.

Almost surely, 2^2006645733 is an apocalyptic number.

It is an amenable number.

2006645733 is a deficient number, since it is larger than the sum of its proper divisors (898450747).

2006645733 is a wasteful number, since it uses less digits than its factorization.

2006645733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508328 (or 508325 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 36.

The square root of 2006645733 is about 44795.5994825385. The cubic root of 2006645733 is about 1261.3150235201.

The spelling of 2006645733 in words is "two billion, six million, six hundred forty-five thousand, seven hundred thirty-three".