20852665 has 8 divisors (see below), whose sum is σ = 25447680. Its totient is φ = 16399152.

The previous prime is 20852639. The next prime is 20852687. The reversal of 20852665 is 56625802.

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 20852665 - 2¹¹ = 20850617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20852665.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35049 + ... + 35638.

It is an arithmetic number, because the mean of its divisors is an integer number (3180960).

Almost surely, 2^20852665 is an apocalyptic number.

It is an amenable number.

20852665 is a deficient number, since it is larger than the sum of its proper divisors (4595015).

20852665 is an equidigital number, since it uses as much as digits as its factorization.

20852665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70751.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 20852665 is about 4566.4718328267. The cubic root of 20852665 is about 275.2456867726.

The spelling of 20852665 in words is "twenty million, eight hundred fifty-two thousand, six hundred sixty-five".