66284601 has 4 divisors (see below), whose sum is σ = 88379472. Its totient is φ = 44189732.

The previous prime is 66284599. The next prime is 66284611. The reversal of 66284601 is 10648266.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66284601 - 2¹ = 66284599 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66284611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11047431 + ... + 11047436.

It is an arithmetic number, because the mean of its divisors is an integer number (22094868).

Almost surely, 2^66284601 is an apocalyptic number.

It is an amenable number.

66284601 is a deficient number, since it is larger than the sum of its proper divisors (22094871).

66284601 is a wasteful number, since it uses less digits than its factorization.

66284601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22094870.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 66284601 is about 8141.5355431270. The cubic root of 66284601 is about 404.7040483814.

The spelling of 66284601 in words is "sixty-six million, two hundred eighty-four thousand, six hundred one".