66280701 has 8 divisors (see below), whose sum is σ = 89619264. Its totient is φ = 43564640.

The previous prime is 66280699. The next prime is 66280717. The reversal of 66280701 is 10708266.

It is a happy number.

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 66280701 - 2¹ = 66280699 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66280751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155376 + ... + 155801.

It is an arithmetic number, because the mean of its divisors is an integer number (11202408).

Almost surely, 2^66280701 is an apocalyptic number.

It is an amenable number.

66280701 is a deficient number, since it is larger than the sum of its proper divisors (23338563).

66280701 is a wasteful number, since it uses less digits than its factorization.

66280701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311251.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 66280701 is about 8141.2960270463. The cubic root of 66280701 is about 404.6961110087.

Adding to 66280701 its reverse (10708266), we get a palindrome (76988967).

The spelling of 66280701 in words is "sixty-six million, two hundred eighty thousand, seven hundred one".