201680474 has 4 divisors (see below), whose sum is σ = 302520714. Its totient is φ = 100840236.

The previous prime is 201680461. The next prime is 201680477. The reversal of 201680474 is 474086102.

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

It can be written as a sum of positive squares in only one way, i.e., 170955625 + 30724849 = 13075^2 + 5543^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 201680474.

It is not an unprimeable number, because it can be changed into a prime (201680477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50420117 + ... + 50420120.

Almost surely, 2^201680474 is an apocalyptic number.

201680474 is a deficient number, since it is larger than the sum of its proper divisors (100840240).

201680474 is a wasteful number, since it uses less digits than its factorization.

201680474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100840239.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 201680474 is about 14201.4250693372. The cubic root of 201680474 is about 586.4368934183.

The spelling of 201680474 in words is "two hundred one million, six hundred eighty thousand, four hundred seventy-four".