66930446 has 32 divisors (see below), whose sum is σ = 113097600. Its totient is φ = 29443680.

The previous prime is 66930443. The next prime is 66930449. The reversal of 66930446 is 64403966.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (66930443) and next prime (66930449).

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66930443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131240 + ... + 131748.

It is an arithmetic number, because the mean of its divisors is an integer number (3534300).

Almost surely, 2^66930446 is an apocalyptic number.

66930446 is a deficient number, since it is larger than the sum of its proper divisors (46167154).

66930446 is a wasteful number, since it uses less digits than its factorization.

66930446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704.

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

The square root of 66930446 is about 8181.1029818723. The cubic root of 66930446 is about 406.0142156524.

It can be divided in two parts, 66930 and 446, that added together give a palindrome (67376).

The spelling of 66930446 in words is "sixty-six million, nine hundred thirty thousand, four hundred forty-six".