20364669 has 24 divisors (see below), whose sum is σ = 32676480. Its totient is φ = 12529296.

The previous prime is 20364661. The next prime is 20364697. The reversal of 20364669 is 96646302.

20364669 is a `hidden beast` number, since 2 + 0 + 3 + 646 + 6 + 9 = 666.

It is not a de Polignac number, because 20364669 - 2³ = 20364661 is a prime.

It is a super-2 number, since 2×20364669² = 829439486959122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20364661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2332 + ... + 6794.

It is an arithmetic number, because the mean of its divisors is an integer number (1361520).

Almost surely, 2^20364669 is an apocalyptic number.

It is an amenable number.

20364669 is a deficient number, since it is larger than the sum of its proper divisors (12311811).

20364669 is a wasteful number, since it uses less digits than its factorization.

20364669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4498 (or 4479 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 20364669 is about 4512.7230138798. The cubic root of 20364669 is about 273.0816082554.

The spelling of 20364669 in words is "twenty million, three hundred sixty-four thousand, six hundred sixty-nine".