1628061 has 4 divisors (see below), whose sum is σ = 2170752. Its totient is φ = 1085372.

The previous prime is 1628059. The next prime is 1628063. The reversal of 1628061 is 1608261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1608261 = 3 ⋅536087.

It is an interprime number because it is at equal distance from previous prime (1628059) and next prime (1628063).

It is a cyclic number.

It is not a de Polignac number, because 1628061 - 2¹ = 1628059 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271341 + ... + 271346.

It is an arithmetic number, because the mean of its divisors is an integer number (542688).

2^1628061 is an apocalyptic number.

It is an amenable number.

1628061 is a deficient number, since it is larger than the sum of its proper divisors (542691).

1628061 is an equidigital number, since it uses as much as digits as its factorization.

1628061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542690.

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

The square root of 1628061 is about 1275.9549365083. The cubic root of 1628061 is about 117.6405079343.

The spelling of 1628061 in words is "one million, six hundred twenty-eight thousand, sixty-one".