20607071 has 4 divisors (see below), whose sum is σ = 20868000. Its totient is φ = 20346144.

The previous prime is 20607061. The next prime is 20607073. The reversal of 20607071 is 17070602.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20607071 - 2⁶ = 20607007 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 (20607073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130346 + ... + 130503.

It is an arithmetic number, because the mean of its divisors is an integer number (5217000).

Almost surely, 2^20607071 is an apocalyptic number.

20607071 is a deficient number, since it is larger than the sum of its proper divisors (260929).

20607071 is an equidigital number, since it uses as much as digits as its factorization.

20607071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260928.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 20607071 is about 4539.5011840510. The cubic root of 20607071 is about 274.1608402642.

Adding to 20607071 its reverse (17070602), we get a palindrome (37677673).

The spelling of 20607071 in words is "twenty million, six hundred seven thousand, seventy-one".