201720674 has 16 divisors (see below), whose sum is σ = 320912928. Its totient is φ = 94769472.

The previous prime is 201720667. The next prime is 201720677. The reversal of 201720674 is 476027102.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201720677) 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, 17249 + ... + 26475.

It is an arithmetic number, because the mean of its divisors is an integer number (20057058).

Almost surely, 2^201720674 is an apocalyptic number.

201720674 is a deficient number, since it is larger than the sum of its proper divisors (119192254).

201720674 is a wasteful number, since it uses less digits than its factorization.

201720674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9889.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 201720674 is about 14202.8403497329. The cubic root of 201720674 is about 586.4758547127.

Adding to 201720674 its reverse (476027102), we get a palindrome (677747776).

The spelling of 201720674 in words is "two hundred one million, seven hundred twenty thousand, six hundred seventy-four".