6609742 has 4 divisors (see below), whose sum is σ = 9914616. Its totient is φ = 3304870.

The previous prime is 6609737. The next prime is 6609761. The reversal of 6609742 is 2479066.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2479066 = 2 ⋅1239533.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 6609698 and 6609707.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1652434 + ... + 1652437.

It is an arithmetic number, because the mean of its divisors is an integer number (2478654).

Almost surely, 2^6609742 is an apocalyptic number.

6609742 is a deficient number, since it is larger than the sum of its proper divisors (3304874).

6609742 is a wasteful number, since it uses less digits than its factorization.

6609742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3304873.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 6609742 is about 2570.9418507621. The cubic root of 6609742 is about 187.6699922046.

The spelling of 6609742 in words is "six million, six hundred nine thousand, seven hundred forty-two".