6620258 has 4 divisors (see below), whose sum is σ = 9930390. Its totient is φ = 3310128.

The previous prime is 6620231. The next prime is 6620261. The reversal of 6620258 is 8520266.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8520266 = 2 ⋅4260133.

It can be written as a sum of positive squares in only one way, i.e., 4566769 + 2053489 = 2137^2 + 1433^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 6620258.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1655063 + ... + 1655066.

Almost surely, 2^6620258 is an apocalyptic number.

6620258 is a deficient number, since it is larger than the sum of its proper divisors (3310132).

6620258 is a wasteful number, since it uses less digits than its factorization.

6620258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3310131.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 6620258 is about 2572.9862028390. The cubic root of 6620258 is about 187.7694661800.

The spelling of 6620258 in words is "six million, six hundred twenty thousand, two hundred fifty-eight".