20246065 has 24 divisors (see below), whose sum is σ = 29930472. Its totient is φ = 13063680.

The previous prime is 20246063. The next prime is 20246071. The reversal of 20246065 is 56064202.

It can be written as a sum of positive squares in 4 ways, for example, as 8767521 + 11478544 = 2961^2 + 3388^2 .

It is not a de Polignac number, because 20246065 - 2¹ = 20246063 is a prime.

It is a super-3 number, since 3×20246065³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20246063) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1735 + ... + 6595.

It is an arithmetic number, because the mean of its divisors is an integer number (1247103).

Almost surely, 2^20246065 is an apocalyptic number.

It is an amenable number.

20246065 is a deficient number, since it is larger than the sum of its proper divisors (9684407).

20246065 is a wasteful number, since it uses less digits than its factorization.

20246065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4897 (or 4890 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 20246065 is about 4499.5627565354. The cubic root of 20246065 is about 272.5504325477.

The spelling of 20246065 in words is "twenty million, two hundred forty-six thousand, sixty-five".