1621082 has 4 divisors (see below), whose sum is σ = 2431626. Its totient is φ = 810540.

The previous prime is 1621079. The next prime is 1621093. The reversal of 1621082 is 2801261.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1297321 + 323761 = 1139^2 + 569^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405269 + ... + 405272.

2^1621082 is an apocalyptic number.

1621082 is a deficient number, since it is larger than the sum of its proper divisors (810544).

1621082 is an equidigital number, since it uses as much as digits as its factorization.

1621082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810543.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 1621082 is about 1273.2171849296. The cubic root of 1621082 is about 117.4721708652.

The spelling of 1621082 in words is "one million, six hundred twenty-one thousand, eighty-two".