66733101 has 6 divisors (see below), whose sum is σ = 96392270. Its totient is φ = 44488728.

The previous prime is 66733099. The next prime is 66733127. The reversal of 66733101 is 10133766.

It can be written as a sum of positive squares in only one way, i.e., 52490025 + 14243076 = 7245^2 + 3774^2 .

It is not a de Polignac number, because 66733101 - 2¹ = 66733099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66733151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3707386 + ... + 3707403.

Almost surely, 2^66733101 is an apocalyptic number.

It is an amenable number.

66733101 is a deficient number, since it is larger than the sum of its proper divisors (29659169).

66733101 is a wasteful number, since it uses less digits than its factorization.

66733101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7414795 (or 7414792 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 66733101 is about 8169.0330517143. The cubic root of 66733101 is about 405.6147773347.

Adding to 66733101 its reverse (10133766), we get a palindrome (76866867).

The spelling of 66733101 in words is "sixty-six million, seven hundred thirty-three thousand, one hundred one".