201072817 has 8 divisors (see below), whose sum is σ = 221028192. Its totient is φ = 181396800.

The previous prime is 201072811. The next prime is 201072841. The reversal of 201072817 is 718270102.

201072817 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201072817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201072811) 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, 68328 + ... + 71209.

It is an arithmetic number, because the mean of its divisors is an integer number (27628524).

Almost surely, 2^201072817 is an apocalyptic number.

It is an amenable number.

201072817 is a deficient number, since it is larger than the sum of its proper divisors (19955375).

201072817 is a wasteful number, since it uses less digits than its factorization.

201072817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139679.

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 201072817 is about 14180.0147038006. The cubic root of 201072817 is about 585.8473288635.

The spelling of 201072817 in words is "two hundred one million, seventy-two thousand, eight hundred seventeen".