201660422 has 4 divisors (see below), whose sum is σ = 302490636. Its totient is φ = 100830210.

The previous prime is 201660401. The next prime is 201660451. The reversal of 201660422 is 224066102.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50415104 + ... + 50415107.

It is an arithmetic number, because the mean of its divisors is an integer number (75622659).

Almost surely, 2^201660422 is an apocalyptic number.

201660422 is a deficient number, since it is larger than the sum of its proper divisors (100830214).

201660422 is a wasteful number, since it uses less digits than its factorization.

201660422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100830213.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 201660422 is about 14200.7190663008. The cubic root of 201660422 is about 586.4174573568.

The spelling of 201660422 in words is "two hundred one million, six hundred sixty thousand, four hundred twenty-two".