6658606 has 4 divisors (see below), whose sum is σ = 9987912. Its totient is φ = 3329302.

The previous prime is 6658573. The next prime is 6658609. The reversal of 6658606 is 6068566.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6658609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1664650 + ... + 1664653.

It is an arithmetic number, because the mean of its divisors is an integer number (2496978).

Almost surely, 2^6658606 is an apocalyptic number.

6658606 is a deficient number, since it is larger than the sum of its proper divisors (3329306).

6658606 is a wasteful number, since it uses less digits than its factorization.

6658606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3329305.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 6658606 is about 2580.4274839646. The cubic root of 6658606 is about 188.1313214066.

The spelling of 6658606 in words is "six million, six hundred fifty-eight thousand, six hundred six".