6620250515 has 8 divisors (see below), whose sum is σ = 8056192608. Its totient is φ = 5221605760.

The previous prime is 6620250509. The next prime is 6620250521. The reversal of 6620250515 is 5150520266.

It is an interprime number because it is at equal distance from previous prime (6620250509) and next prime (6620250521).

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

It is not a de Polignac number, because 6620250515 - 2¹² = 6620246419 is a prime.

It is a Duffinian 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, 9323942 + ... + 9324651.

It is an arithmetic number, because the mean of its divisors is an integer number (1007024076).

Almost surely, 2^6620250515 is an apocalyptic number.

6620250515 is a deficient number, since it is larger than the sum of its proper divisors (1435942093).

6620250515 is a wasteful number, since it uses less digits than its factorization.

6620250515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18648669.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 6620250515 is about 81364.9218951263. The cubic root of 6620250515 is about 1877.6939541462.

The spelling of 6620250515 in words is "six billion, six hundred twenty million, two hundred fifty thousand, five hundred fifteen".