1641996 has 36 divisors (see below), whose sum is σ = 4396392. Its totient is φ = 514944.

The previous prime is 1641971. The next prime is 1642021. The reversal of 1641996 is 6991461.

1641996 is a `hidden beast` number, since 1 + 641 + 9 + 9 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (1641971) and next prime (1642021).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1641996.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 730 + ... + 1953.

It is an arithmetic number, because the mean of its divisors is an integer number (122122).

2^1641996 is an apocalyptic number.

It is an amenable number.

1641996 is an abundant number, since it is smaller than the sum of its proper divisors (2754396).

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

1641996 is a wasteful number, since it uses less digits than its factorization.

1641996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2710 (or 2705 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 1641996 is about 1281.4039175841. The cubic root of 1641996 is about 117.9751934831.

The spelling of 1641996 in words is "one million, six hundred forty-one thousand, nine hundred ninety-six".