6620093 has 4 divisors (see below), whose sum is σ = 6654588. Its totient is φ = 6585600.

The previous prime is 6620083. The next prime is 6620101. The reversal of 6620093 is 3900266.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3900266 = 2 ⋅1950133.

It can be written as a sum of positive squares in 2 ways, for example, as 1036324 + 5583769 = 1018^2 + 2363^2 .

It is a cyclic number.

It is not a de Polignac number, because 6620093 - 2¹⁶ = 6554557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6620083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16958 + ... + 17343.

It is an arithmetic number, because the mean of its divisors is an integer number (1663647).

Almost surely, 2^6620093 is an apocalyptic number.

It is an amenable number.

6620093 is a deficient number, since it is larger than the sum of its proper divisors (34495).

6620093 is a wasteful number, since it uses less digits than its factorization.

6620093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34494.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 6620093 is about 2572.9541387285. The cubic root of 6620093 is about 187.7679062096.

The spelling of 6620093 in words is "six million, six hundred twenty thousand, ninety-three".