20602645 has 8 divisors (see below), whose sum is σ = 28255104. Its totient is φ = 14127504.

The previous prime is 20602643. The next prime is 20602661. The reversal of 20602645 is 54620602.

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 20602645 - 2¹ = 20602643 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20602643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294289 + ... + 294358.

It is an arithmetic number, because the mean of its divisors is an integer number (3531888).

Almost surely, 2^20602645 is an apocalyptic number.

It is an amenable number.

20602645 is a deficient number, since it is larger than the sum of its proper divisors (7652459).

20602645 is an equidigital number, since it uses as much as digits as its factorization.

20602645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588659.

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

The square root of 20602645 is about 4539.0136593758. The cubic root of 20602645 is about 274.1412107115.

The spelling of 20602645 in words is "twenty million, six hundred two thousand, six hundred forty-five".