66452231 has 8 divisors (see below), whose sum is σ = 68035200. Its totient is φ = 64884600.

The previous prime is 66452227. The next prime is 66452257. The reversal of 66452231 is 13225466.

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 66452231 - 2² = 66452227 is a prime.

It is a super-2 number, since 2×66452231² = 8831798009754722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66452194 and 66452203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66452731) 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, 5180 + ... + 12638.

It is an arithmetic number, because the mean of its divisors is an integer number (8504400).

Almost surely, 2^66452231 is an apocalyptic number.

66452231 is a deficient number, since it is larger than the sum of its proper divisors (1582969).

66452231 is a wasteful number, since it uses less digits than its factorization.

66452231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7669.

The product of its digits is 8640, while the sum is 29.

The square root of 66452231 is about 8151.8237836695. The cubic root of 66452231 is about 405.0449190639.

Adding to 66452231 its reverse (13225466), we get a palindrome (79677697).

The spelling of 66452231 in words is "sixty-six million, four hundred fifty-two thousand, two hundred thirty-one".