66231430 has 16 divisors (see below), whose sum is σ = 119426400. Its totient is φ = 26445952.

The previous prime is 66231401. The next prime is 66231437. The reversal of 66231430 is 3413266.

It is a junction number, because it is equal to n+sod(n) for n = 66231395 and 66231404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66231437) 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, 462 + ... + 11518.

It is an arithmetic number, because the mean of its divisors is an integer number (7464150).

Almost surely, 2^66231430 is an apocalyptic number.

66231430 is a deficient number, since it is larger than the sum of its proper divisors (53194970).

66231430 is a wasteful number, since it uses less digits than its factorization.

66231430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11663.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 66231430 is about 8138.2694720684. The cubic root of 66231430 is about 404.5958066733.

Adding to 66231430 its reverse (3413266), we get a palindrome (69644696).

The spelling of 66231430 in words is "sixty-six million, two hundred thirty-one thousand, four hundred thirty".