201669285 has 8 divisors (see below), whose sum is σ = 322670880. Its totient is φ = 107556944.

The previous prime is 201669241. The next prime is 201669329. The reversal of 201669285 is 582966102.

It is an interprime number because it is at equal distance from previous prime (201669241) and next prime (201669329).

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

It is a cyclic number.

It is not a de Polignac number, because 201669285 - 2¹⁴ = 201652901 is a prime.

It is a super-2 number, since 2×201669285² = 81341001024822450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6722295 + ... + 6722324.

It is an arithmetic number, because the mean of its divisors is an integer number (40333860).

Almost surely, 2^201669285 is an apocalyptic number.

It is an amenable number.

201669285 is a deficient number, since it is larger than the sum of its proper divisors (121001595).

201669285 is a wasteful number, since it uses less digits than its factorization.

201669285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13444627.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 201669285 is about 14201.0311245346. The cubic root of 201669285 is about 586.4260482704.

The spelling of 201669285 in words is "two hundred one million, six hundred sixty-nine thousand, two hundred eighty-five".