20660367 has 16 divisors (see below), whose sum is σ = 33904640. Its totient is φ = 10897632.

The previous prime is 20660347. The next prime is 20660377. The reversal of 20660367 is 76306602.

It is not a de Polignac number, because 20660367 - 2⁶ = 20660303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20660327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37567 + ... + 38112.

It is an arithmetic number, because the mean of its divisors is an integer number (2119040).

Almost surely, 2^20660367 is an apocalyptic number.

20660367 is a deficient number, since it is larger than the sum of its proper divisors (13244273).

20660367 is a wasteful number, since it uses less digits than its factorization.

20660367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75702.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 20660367 is about 4545.3676418965. The cubic root of 20660367 is about 274.3969905562.

Adding to 20660367 its reverse (76306602), we get a palindrome (96966969).

The spelling of 20660367 in words is "twenty million, six hundred sixty thousand, three hundred sixty-seven".