201396644 has 12 divisors (see below), whose sum is σ = 352565724. Its totient is φ = 100663584.

The previous prime is 201396641. The next prime is 201396719. The reversal of 201396644 is 446693102.

It can be written as a sum of positive squares in 2 ways, for example, as 189062500 + 12334144 = 13750^2 + 3512^2 .

It is not an unprimeable number, because it can be changed into a prime (201396641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7862 + ... + 21554.

It is an arithmetic number, because the mean of its divisors is an integer number (29380477).

Almost surely, 2^201396644 is an apocalyptic number.

It is an amenable number.

201396644 is a deficient number, since it is larger than the sum of its proper divisors (151169080).

201396644 is a wasteful number, since it uses less digits than its factorization.

201396644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17374 (or 17372 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 201396644 is about 14191.4285397912. The cubic root of 201396644 is about 586.1616618047.

The spelling of 201396644 in words is "two hundred one million, three hundred ninety-six thousand, six hundred forty-four".