66469430 has 16 divisors (see below), whose sum is σ = 119759040. Its totient is φ = 26562432.

The previous prime is 66469423. The next prime is 66469433. The reversal of 66469430 is 3496466.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66469433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10766 + ... + 15774.

It is an arithmetic number, because the mean of its divisors is an integer number (7484940).

Almost surely, 2^66469430 is an apocalyptic number.

66469430 is a deficient number, since it is larger than the sum of its proper divisors (53289610).

66469430 is a wasteful number, since it uses less digits than its factorization.

66469430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6343.

The product of its (nonzero) digits is 93312, while the sum is 38.

The square root of 66469430 is about 8152.8786327284. The cubic root of 66469430 is about 405.0798602868.

The spelling of 66469430 in words is "sixty-six million, four hundred sixty-nine thousand, four hundred thirty".