201396643 has 8 divisors (see below), whose sum is σ = 230397440. Its totient is φ = 172453320.

The previous prime is 201396641. The next prime is 201396719. The reversal of 201396643 is 346693102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201396643 - 2¹ = 201396641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201396599 and 201396608.

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 7 ways as a sum of consecutive naturals, for example, 6573 + ... + 21118.

It is an arithmetic number, because the mean of its divisors is an integer number (28799680).

Almost surely, 2^201396643 is an apocalyptic number.

201396643 is a deficient number, since it is larger than the sum of its proper divisors (29000797).

201396643 is a wasteful number, since it uses less digits than its factorization.

201396643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28737.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 201396643 is about 14191.4285045587. The cubic root of 201396643 is about 586.1616608345.

The spelling of 201396643 in words is "two hundred one million, three hundred ninety-six thousand, six hundred forty-three".