6604452857 has 4 divisors (see below), whose sum is σ = 6607439460. Its totient is φ = 6601466256.

The previous prime is 6604452847. The next prime is 6604452889. The reversal of 6604452857 is 7582544066.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3083691961 + 3520760896 = 55531^2 + 59336^2 .

It is a cyclic number.

It is not a de Polignac number, because 6604452857 - 2⁶ = 6604452793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6604452847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1489982 + ... + 1494407.

It is an arithmetic number, because the mean of its divisors is an integer number (1651859865).

Almost surely, 2^6604452857 is an apocalyptic number.

It is an amenable number.

6604452857 is a deficient number, since it is larger than the sum of its proper divisors (2986603).

6604452857 is a wasteful number, since it uses less digits than its factorization.

6604452857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2986602.

The product of its (nonzero) digits is 1612800, while the sum is 47.

The square root of 6604452857 is about 81267.7848658372. The cubic root of 6604452857 is about 1876.1992074403.

The spelling of 6604452857 in words is "six billion, six hundred four million, four hundred fifty-two thousand, eight hundred fifty-seven".