201026564 has 24 divisors (see below), whose sum is σ = 374571288. Its totient is φ = 94072320.

The previous prime is 201026491. The next prime is 201026611. The reversal of 201026564 is 465620102.

201026564 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 577600 + 200448964 = 760^2 + 14158^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4142 + ... + 20474.

It is an arithmetic number, because the mean of its divisors is an integer number (15607137).

Almost surely, 2^201026564 is an apocalyptic number.

It is an amenable number.

201026564 is a deficient number, since it is larger than the sum of its proper divisors (173544724).

201026564 is a wasteful number, since it uses less digits than its factorization.

201026564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16535 (or 16533 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 201026564 is about 14178.3836878538. The cubic root of 201026564 is about 585.8024043847.

Adding to 201026564 its reverse (465620102), we get a palindrome (666646666).

The spelling of 201026564 in words is "two hundred one million, twenty-six thousand, five hundred sixty-four".