201026646 has 24 divisors (see below), whose sum is σ = 435927024. Its totient is φ = 66952080.

The previous prime is 201026633. The next prime is 201026671. The reversal of 201026646 is 646620102.

It is a happy number.

201026646 is a `hidden beast` number, since 2 + 0 + 10 + 2 + 6 + 646 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20815 + ... + 28901.

It is an arithmetic number, because the mean of its divisors is an integer number (18163626).

Almost surely, 2^201026646 is an apocalyptic number.

201026646 is an abundant number, since it is smaller than the sum of its proper divisors (234900378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201026646 is a wasteful number, since it uses less digits than its factorization.

201026646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9476 (or 9473 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 201026646 is about 14178.3865795795. The cubic root of 201026646 is about 585.8024840356.

Adding to 201026646 its product of nonzero digits (3456), we get a palindrome (201030102).

Adding to 201026646 its reverse (646620102), we get a palindrome (847646748).

The spelling of 201026646 in words is "two hundred one million, twenty-six thousand, six hundred forty-six".