16620115 has 8 divisors (see below), whose sum is σ = 19971360. Its totient is φ = 13277952.

The previous prime is 16620049. The next prime is 16620119. The reversal of 16620115 is 51102661.

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

It is a cyclic number.

It is not a de Polignac number, because 16620115 - 2¹⁷ = 16489043 is a prime.

It is a super-2 number, since 2×16620115² = 552456445226450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16620119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2787 + ... + 6403.

It is an arithmetic number, because the mean of its divisors is an integer number (2496420).

Almost surely, 2^16620115 is an apocalyptic number.

16620115 is a deficient number, since it is larger than the sum of its proper divisors (3351245).

16620115 is an equidigital number, since it uses as much as digits as its factorization.

16620115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4541.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 16620115 is about 4076.7775264294. Note that the first 3 decimals coincide. The cubic root of 16620115 is about 255.1984358270.

Adding to 16620115 its reverse (51102661), we get a palindrome (67722776).

The spelling of 16620115 in words is "sixteen million, six hundred twenty thousand, one hundred fifteen".