20612071 has 16 divisors (see below), whose sum is σ = 22555584. Its totient is φ = 18779904.

The previous prime is 20612027. The next prime is 20612089. The reversal of 20612071 is 17021602.

It is a cyclic number.

It is not a de Polignac number, because 20612071 - 2¹⁵ = 20579303 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 (20612021) 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, 44875 + ... + 45331.

It is an arithmetic number, because the mean of its divisors is an integer number (1409724).

Almost surely, 2^20612071 is an apocalyptic number.

20612071 is a deficient number, since it is larger than the sum of its proper divisors (1943513).

20612071 is a wasteful number, since it uses less digits than its factorization.

20612071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 20612071 is about 4540.0518719504. The cubic root of 20612071 is about 274.1830121577.

Adding to 20612071 its reverse (17021602), we get a palindrome (37633673).

The spelling of 20612071 in words is "twenty million, six hundred twelve thousand, seventy-one".