1640046 has 16 divisors (see below), whose sum is σ = 3334608. Its totient is φ = 537600.

The previous prime is 1640033. The next prime is 1640053. The reversal of 1640046 is 6400461.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1875 + ... + 2606.

It is an arithmetic number, because the mean of its divisors is an integer number (208413).

2^1640046 is an apocalyptic number.

1640046 is an abundant number, since it is smaller than the sum of its proper divisors (1694562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1640046 is a wasteful number, since it uses less digits than its factorization.

1640046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4547.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1640046 is about 1280.6428073432. The cubic root of 1640046 is about 117.9284733621.

The spelling of 1640046 in words is "one million, six hundred forty thousand, forty-six".