201672617 has 4 divisors (see below), whose sum is σ = 201801600. Its totient is φ = 201543636.

The previous prime is 201672599. The next prime is 201672619. The reversal of 201672617 is 716276102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201672617 - 2¹⁰ = 201671593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201672619) 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, 62117 + ... + 65282.

It is an arithmetic number, because the mean of its divisors is an integer number (50450400).

Almost surely, 2^201672617 is an apocalyptic number.

It is an amenable number.

201672617 is a deficient number, since it is larger than the sum of its proper divisors (128983).

201672617 is a wasteful number, since it uses less digits than its factorization.

201672617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128982.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 201672617 is about 14201.1484394749. The cubic root of 201672617 is about 586.4292779158.

The spelling of 201672617 in words is "two hundred one million, six hundred seventy-two thousand, six hundred seventeen".