6664535 has 24 divisors (see below), whose sum is σ = 8817840. Its totient is φ = 4821120.

The previous prime is 6664531. The next prime is 6664543. The reversal of 6664535 is 5354666.

It is not a de Polignac number, because 6664535 - 2² = 6664531 is a prime.

It is a super-3 number, since 3×6664535³ (a number of 21 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6664495 and 6664504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6664531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91259 + ... + 91331.

It is an arithmetic number, because the mean of its divisors is an integer number (367410).

Almost surely, 2^6664535 is an apocalyptic number.

6664535 is a deficient number, since it is larger than the sum of its proper divisors (2153305).

6664535 is a wasteful number, since it uses less digits than its factorization.

6664535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 128 counting only the distinct ones).

The product of its digits is 64800, while the sum is 35.

The square root of 6664535 is about 2581.5760689935. The cubic root of 6664535 is about 188.1871438864.

The spelling of 6664535 in words is "six million, six hundred sixty-four thousand, five hundred thirty-five".