201071643 has 8 divisors (see below), whose sum is σ = 268333056. Its totient is φ = 133929000.

The previous prime is 201071639. The next prime is 201071657. The reversal of 201071643 is 346170102.

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

It is not a de Polignac number, because 201071643 - 2² = 201071639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201071603) 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, 25663 + ... + 32568.

It is an arithmetic number, because the mean of its divisors is an integer number (33541632).

Almost surely, 2^201071643 is an apocalyptic number.

201071643 is a deficient number, since it is larger than the sum of its proper divisors (67261413).

201071643 is a wasteful number, since it uses less digits than its factorization.

201071643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59385.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 201071643 is about 14179.9733074502. The cubic root of 201071643 is about 585.8461886695.

The spelling of 201071643 in words is "two hundred one million, seventy-one thousand, six hundred forty-three".