1621068 has 12 divisors (see below), whose sum is σ = 3782520. Its totient is φ = 540352.

The previous prime is 1621049. The next prime is 1621079. The reversal of 1621068 is 8601261.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1621068² = 5255722921248, which contains 22 as substring.

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, 67533 + ... + 67556.

It is an arithmetic number, because the mean of its divisors is an integer number (315210).

2^1621068 is an apocalyptic number.

It is an amenable number.

1621068 is an abundant number, since it is smaller than the sum of its proper divisors (2161452).

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

1621068 is a wasteful number, since it uses less digits than its factorization.

1621068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135096 (or 135094 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1621068 is about 1273.2116870340. The cubic root of 1621068 is about 117.4718326929.

The spelling of 1621068 in words is "one million, six hundred twenty-one thousand, sixty-eight".