6566942 has 4 divisors (see below), whose sum is σ = 9850416. Its totient is φ = 3283470.

The previous prime is 6566939. The next prime is 6566957. The reversal of 6566942 is 2496656.

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

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 6566896 and 6566905.

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, 1641734 + ... + 1641737.

It is an arithmetic number, because the mean of its divisors is an integer number (2462604).

Almost surely, 2^6566942 is an apocalyptic number.

6566942 is a deficient number, since it is larger than the sum of its proper divisors (3283474).

6566942 is a wasteful number, since it uses less digits than its factorization.

6566942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3283473.

The product of its digits is 77760, while the sum is 38.

The square root of 6566942 is about 2562.6045344532. The cubic root of 6566942 is about 187.2640421483.

The spelling of 6566942 in words is "six million, five hundred sixty-six thousand, nine hundred forty-two".