1642066 has 8 divisors (see below), whose sum is σ = 2471040. Its totient is φ = 818388.

The previous prime is 1642057. The next prime is 1642079. The reversal of 1642066 is 6602461.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1642066.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 426 + ... + 1861.

It is an arithmetic number, because the mean of its divisors is an integer number (308880).

2^1642066 is an apocalyptic number.

1642066 is a deficient number, since it is larger than the sum of its proper divisors (828974).

1642066 is a wasteful number, since it uses less digits than its factorization.

1642066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2648.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1642066 is about 1281.4312310850. The cubic root of 1642066 is about 117.9768699278.

The spelling of 1642066 in words is "one million, six hundred forty-two thousand, sixty-six".