20650077 has 12 divisors (see below), whose sum is σ = 34089120. Its totient is φ = 11800008.

The previous prime is 20650057. The next prime is 20650081. The reversal of 20650077 is 77005602.

20650077 is a `hidden beast` number, since 2 + 0 + 650 + 0 + 7 + 7 = 666.

It is not a de Polignac number, because 20650077 - 2⁶ = 20650013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20650077.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 163827 + ... + 163952.

It is an arithmetic number, because the mean of its divisors is an integer number (2840760).

Almost surely, 2^20650077 is an apocalyptic number.

It is an amenable number.

20650077 is a deficient number, since it is larger than the sum of its proper divisors (13439043).

20650077 is a wasteful number, since it uses less digits than its factorization.

20650077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327792 (or 327789 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 20650077 is about 4544.2355792806. The cubic root of 20650077 is about 274.3514280561.

Adding to 20650077 its reverse (77005602), we get a palindrome (97655679).

The spelling of 20650077 in words is "twenty million, six hundred fifty thousand, seventy-seven".