6664335020 has 48 divisors (see below), whose sum is σ = 16005040128. Its totient is φ = 2283395520.

The previous prime is 6664334993. The next prime is 6664335047. The reversal of 6664335020 is 205334666.

It is an interprime number because it is at equal distance from previous prime (6664334993) and next prime (6664335047).

It is a super-2 number, since 2×6664335020² = 88826722517596800800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206585 + ... + 236655.

It is an arithmetic number, because the mean of its divisors is an integer number (333438336).

Almost surely, 2^6664335020 is an apocalyptic number.

It is an amenable number.

6664335020 is an abundant number, since it is smaller than the sum of its proper divisors (9340705108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6664335020 is a wasteful number, since it uses less digits than its factorization.

6664335020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31670 (or 31668 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 35.

The square root of 6664335020 is about 81635.3784826162. The cubic root of 6664335020 is about 1881.8526158250.

Adding to 6664335020 its reverse (205334666), we get a palindrome (6869669686).

The spelling of 6664335020 in words is "six billion, six hundred sixty-four million, three hundred thirty-five thousand, twenty".