6663532357 has 4 divisors (see below), whose sum is σ = 6665623776. Its totient is φ = 6661440940.

The previous prime is 6663532349. The next prime is 6663532361. The reversal of 6663532357 is 7532353666.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6663532357 - 2³ = 6663532349 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 (6663532307) 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, 1040923 + ... + 1047304.

It is an arithmetic number, because the mean of its divisors is an integer number (1666405944).

Almost surely, 2^6663532357 is an apocalyptic number.

It is an amenable number.

6663532357 is a deficient number, since it is larger than the sum of its proper divisors (2091419).

6663532357 is a wasteful number, since it uses less digits than its factorization.

6663532357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2091418.

The product of its digits is 2041200, while the sum is 46.

The square root of 6663532357 is about 81630.4621878377. The cubic root of 6663532357 is about 1881.7770616946. Note that the first 3 decimals are identical.

The spelling of 6663532357 in words is "six billion, six hundred sixty-three million, five hundred thirty-two thousand, three hundred fifty-seven".