1964646 has 12 divisors (see below), whose sum is σ = 4256772. Its totient is φ = 654876.

The previous prime is 1964629. The next prime is 1964659. The reversal of 1964646 is 6464691.

1964646 is a `hidden beast` number, since 1 + 9 + 6 + 4 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1964646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54556 + ... + 54591.

It is an arithmetic number, because the mean of its divisors is an integer number (354731).

2^1964646 is an apocalyptic number.

1964646 is an abundant number, since it is smaller than the sum of its proper divisors (2292126).

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

1964646 is a wasteful number, since it uses less digits than its factorization.

1964646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109155 (or 109152 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 1964646 is about 1401.6583035819. The cubic root of 1964646 is about 125.2452996431.

The spelling of 1964646 in words is "one million, nine hundred sixty-four thousand, six hundred forty-six".