201620626 has 4 divisors (see below), whose sum is σ = 302430942. Its totient is φ = 100810312.

The previous prime is 201620623. The next prime is 201620633. The reversal of 201620626 is 626026102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 201611601 + 9025 = 14199^2 + 95^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 201620626.

It is not an unprimeable number, because it can be changed into a prime (201620623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50405155 + ... + 50405158.

Almost surely, 2^201620626 is an apocalyptic number.

201620626 is a deficient number, since it is larger than the sum of its proper divisors (100810316).

201620626 is a wasteful number, since it uses less digits than its factorization.

201620626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100810315.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 201620626 is about 14199.3178005142. The cubic root of 201620626 is about 586.3788799565.

Adding to 201620626 its reverse (626026102), we get a palindrome (827646728).

The spelling of 201620626 in words is "two hundred one million, six hundred twenty thousand, six hundred twenty-six".