20201077 has 6 divisors (see below), whose sum is σ = 21874722. Its totient is φ = 18646992.

The previous prime is 20201063. The next prime is 20201089. The reversal of 20201077 is 77010202.

It can be written as a sum of positive squares in 3 ways, for example, as 5041 + 20196036 = 71^2 + 4494^2 .

It is not a de Polignac number, because 20201077 - 2¹¹ = 20199029 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 (20201477) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59598 + ... + 59935.

It is an arithmetic number, because the mean of its divisors is an integer number (3645787).

Almost surely, 2^20201077 is an apocalyptic number.

It is an amenable number.

20201077 is a deficient number, since it is larger than the sum of its proper divisors (1673645).

20201077 is a wasteful number, since it uses less digits than its factorization.

20201077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119559 (or 119546 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 19.

The square root of 20201077 is about 4494.5608239293. The cubic root of 20201077 is about 272.3484082363.

Adding to 20201077 its reverse (77010202), we get a palindrome (97211279).

The spelling of 20201077 in words is "twenty million, two hundred one thousand, seventy-seven".