6637342 has 4 divisors (see below), whose sum is σ = 9956016. Its totient is φ = 3318670.

The previous prime is 6637339. The next prime is 6637357. The reversal of 6637342 is 2437366.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2437366 = 2 ⋅1218683.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 1659334 + ... + 1659337.

It is an arithmetic number, because the mean of its divisors is an integer number (2489004).

Almost surely, 2^6637342 is an apocalyptic number.

6637342 is a deficient number, since it is larger than the sum of its proper divisors (3318674).

6637342 is a wasteful number, since it uses less digits than its factorization.

6637342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318673.

The product of its digits is 18144, while the sum is 31.

The square root of 6637342 is about 2576.3039416963. The cubic root of 6637342 is about 187.9308444904.

The spelling of 6637342 in words is "six million, six hundred thirty-seven thousand, three hundred forty-two".