20045607 has 16 divisors (see below), whose sum is σ = 27457920. Its totient is φ = 13002912.

The previous prime is 20045593. The next prime is 20045617. The reversal of 20045607 is 70654002.

It is a happy number.

It is not a de Polignac number, because 20045607 - 2⁴ = 20045591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20045617) 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, 21648 + ... + 22554.

It is an arithmetic number, because the mean of its divisors is an integer number (1716120).

Almost surely, 2^20045607 is an apocalyptic number.

20045607 is a deficient number, since it is larger than the sum of its proper divisors (7412313).

20045607 is a wasteful number, since it uses less digits than its factorization.

20045607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 20045607 is about 4477.2320690355. The cubic root of 20045607 is about 271.6479324320.

Adding to 20045607 its reverse (70654002), we get a palindrome (90699609).

The spelling of 20045607 in words is "twenty million, forty-five thousand, six hundred seven".