6620342 has 4 divisors (see below), whose sum is σ = 9930516. Its totient is φ = 3310170.

The previous prime is 6620309. The next prime is 6620351. The reversal of 6620342 is 2430266.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2430266 = 2 ⋅1215133.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1655084 + ... + 1655087.

It is an arithmetic number, because the mean of its divisors is an integer number (2482629).

Almost surely, 2^6620342 is an apocalyptic number.

6620342 is a deficient number, since it is larger than the sum of its proper divisors (3310174).

6620342 is a wasteful number, since it uses less digits than its factorization.

6620342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3310173.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 6620342 is about 2573.0025262327. The cubic root of 6620342 is about 187.7702603368.

The spelling of 6620342 in words is "six million, six hundred twenty thousand, three hundred forty-two".