2006864657 has 8 divisors (see below), whose sum is σ = 2300059776. Its totient is φ = 1715294592.

The previous prime is 2006864633. The next prime is 2006864687. The reversal of 2006864657 is 7564686002.

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 2006864657 - 2²⁰ = 2005816081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2006864617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 403613 + ... + 408554.

It is an arithmetic number, because the mean of its divisors is an integer number (287507472).

Almost surely, 2^2006864657 is an apocalyptic number.

It is an amenable number.

2006864657 is a deficient number, since it is larger than the sum of its proper divisors (293195119).

2006864657 is an equidigital number, since it uses as much as digits as its factorization.

2006864657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812527.

The product of its (nonzero) digits is 483840, while the sum is 44.

The square root of 2006864657 is about 44798.0430041313. The cubic root of 2006864657 is about 1261.3608914552.

The spelling of 2006864657 in words is "two billion, six million, eight hundred sixty-four thousand, six hundred fifty-seven".