20650037 has 4 divisors (see below), whose sum is σ = 20843136. Its totient is φ = 20456940.

The previous prime is 20650027. The next prime is 20650043. The reversal of 20650037 is 73005602.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73005602 = 2 ⋅36502801.

It is a cyclic number.

It is not a de Polignac number, because 20650037 - 2⁶ = 20649973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20649994 and 20650021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20650027) 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, 96389 + ... + 96602.

It is an arithmetic number, because the mean of its divisors is an integer number (5210784).

Almost surely, 2^20650037 is an apocalyptic number.

It is an amenable number.

20650037 is a deficient number, since it is larger than the sum of its proper divisors (193099).

20650037 is a wasteful number, since it uses less digits than its factorization.

20650037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193098.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 20650037 is about 4544.2311780982. The cubic root of 20650037 is about 274.3512509129.

Adding to 20650037 its reverse (73005602), we get a palindrome (93655639).

The spelling of 20650037 in words is "twenty million, six hundred fifty thousand, thirty-seven".