20604495 has 16 divisors (see below), whose sum is σ = 33032160. Its totient is φ = 10967424.

The previous prime is 20604457. The next prime is 20604499. The reversal of 20604495 is 59440602.

It is not a de Polignac number, because 20604495 - 2⁶ = 20604431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20604499) 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, 9141 + ... + 11169.

It is an arithmetic number, because the mean of its divisors is an integer number (2064510).

Almost surely, 2^20604495 is an apocalyptic number.

20604495 is a deficient number, since it is larger than the sum of its proper divisors (12427665).

20604495 is a wasteful number, since it uses less digits than its factorization.

20604495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2714.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 20604495 is about 4539.2174435689. The cubic root of 20604495 is about 274.1494159049.

It can be divided in two parts, 2060 and 4495, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 20604495 in words is "twenty million, six hundred four thousand, four hundred ninety-five".