66201369 has 8 divisors (see below), whose sum is σ = 95058432. Its totient is φ = 40739280.

The previous prime is 66201361. The next prime is 66201407. The reversal of 66201369 is 96310266.

It is a happy number.

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

It is not a de Polignac number, because 66201369 - 2³ = 66201361 is a prime.

It is a super-2 number, since 2×66201369² = 8765242514948322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66201361) 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, 848697 + ... + 848774.

It is an arithmetic number, because the mean of its divisors is an integer number (11882304).

Almost surely, 2^66201369 is an apocalyptic number.

It is an amenable number.

66201369 is a deficient number, since it is larger than the sum of its proper divisors (28857063).

66201369 is a wasteful number, since it uses less digits than its factorization.

66201369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697487.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 66201369 is about 8136.4223710424. The cubic root of 66201369 is about 404.5345850090.

The spelling of 66201369 in words is "sixty-six million, two hundred one thousand, three hundred sixty-nine".