1628613 has 24 divisors (see below), whose sum is σ = 2808960. Its totient is φ = 929880.

The previous prime is 1628603. The next prime is 1628621. The reversal of 1628613 is 3168261.

It is not a de Polignac number, because 1628613 - 2¹⁶ = 1563077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 1 + 6³ + 2¹⁵ + 8 + 6⁴ + 1 + 3¹³ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1628603) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 708 + ... + 1938.

It is an arithmetic number, because the mean of its divisors is an integer number (117040).

2^1628613 is an apocalyptic number.

It is an amenable number.

1628613 is a deficient number, since it is larger than the sum of its proper divisors (1180347).

1628613 is a wasteful number, since it uses less digits than its factorization.

1628613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254 (or 1241 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 1628613 is about 1276.1712267560. The cubic root of 1628613 is about 117.6538019125.

The spelling of 1628613 in words is "one million, six hundred twenty-eight thousand, six hundred thirteen".