2006783553 has 8 divisors (see below), whose sum is σ = 2816538400. Its totient is φ = 1267442208.

The previous prime is 2006783549. The next prime is 2006783587. The reversal of 2006783553 is 3553876002.

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

It is not a de Polignac number, because 2006783553 - 2² = 2006783549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2006783593) 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, 17603308 + ... + 17603421.

It is an arithmetic number, because the mean of its divisors is an integer number (352067300).

Almost surely, 2^2006783553 is an apocalyptic number.

It is an amenable number.

2006783553 is a deficient number, since it is larger than the sum of its proper divisors (809754847).

2006783553 is a wasteful number, since it uses less digits than its factorization.

2006783553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35206751.

The product of its (nonzero) digits is 151200, while the sum is 39.

The square root of 2006783553 is about 44797.1377768714. The cubic root of 2006783553 is about 1261.3438993125.

The spelling of 2006783553 in words is "two billion, six million, seven hundred eighty-three thousand, five hundred fifty-three".