20616675 has 12 divisors (see below), whose sum is σ = 34086360. Its totient is φ = 10995520.

The previous prime is 20616667. The next prime is 20616677. The reversal of 20616675 is 57661602.

It is not a de Polignac number, because 20616675 - 2³ = 20616667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20616677) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137370 + ... + 137519.

It is an arithmetic number, because the mean of its divisors is an integer number (2840530).

Almost surely, 2^20616675 is an apocalyptic number.

20616675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20616675 is a deficient number, since it is larger than the sum of its proper divisors (13469685).

20616675 is a wasteful number, since it uses less digits than its factorization.

20616675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274902 (or 274897 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 20616675 is about 4540.5588863046. The cubic root of 20616675 is about 274.2034248666.

The spelling of 20616675 in words is "twenty million, six hundred sixteen thousand, six hundred seventy-five".