6620415 has 8 divisors (see below), whose sum is σ = 10592688. Its totient is φ = 3530880.

The previous prime is 6620407. The next prime is 6620423. The reversal of 6620415 is 5140266.

It is an interprime number because it is at equal distance from previous prime (6620407) and next prime (6620423).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6620415 - 2³ = 6620407 is a prime.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 220666 + ... + 220695.

It is an arithmetic number, because the mean of its divisors is an integer number (1324086).

Almost surely, 2^6620415 is an apocalyptic number.

6620415 is a deficient number, since it is larger than the sum of its proper divisors (3972273).

6620415 is a wasteful number, since it uses less digits than its factorization.

6620415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441369.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 6620415 is about 2573.0167119551. The cubic root of 6620415 is about 187.7709504914.

The spelling of 6620415 in words is "six million, six hundred twenty thousand, four hundred fifteen".