6660502 has 4 divisors (see below), whose sum is σ = 9990756. Its totient is φ = 3330250.

The previous prime is 6660499. The next prime is 6660503. The reversal of 6660502 is 2050666.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2050666 = 2 ⋅1025333.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6660503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1665124 + ... + 1665127.

It is an arithmetic number, because the mean of its divisors is an integer number (2497689).

Almost surely, 2^6660502 is an apocalyptic number.

6660502 is a deficient number, since it is larger than the sum of its proper divisors (3330254).

6660502 is a wasteful number, since it uses less digits than its factorization.

6660502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3330253.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 6660502 is about 2580.7948388045. The cubic root of 6660502 is about 188.1491761515.

The spelling of 6660502 in words is "six million, six hundred sixty thousand, five hundred two".