66393430 has 16 divisors (see below), whose sum is σ = 119623680. Its totient is φ = 26531712.

The previous prime is 66393409. The next prime is 66393463. The reversal of 66393430 is 3439366.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10411 + ... + 15529.

It is an arithmetic number, because the mean of its divisors is an integer number (7476480).

Almost surely, 2^66393430 is an apocalyptic number.

66393430 is a deficient number, since it is larger than the sum of its proper divisors (53230250).

66393430 is a wasteful number, since it uses less digits than its factorization.

66393430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6423.

The product of its (nonzero) digits is 34992, while the sum is 34.

The square root of 66393430 is about 8148.2163692430. The cubic root of 66393430 is about 404.9254142993.

The spelling of 66393430 in words is "sixty-six million, three hundred ninety-three thousand, four hundred thirty".