66344330 has 48 divisors (see below), whose sum is σ = 132932664. Its totient is φ = 23811840.

The previous prime is 66344321. The next prime is 66344363. The reversal of 66344330 is 3344366.

It can be written as a sum of positive squares in 12 ways, for example, as 3728761 + 62615569 = 1931^2 + 7913^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 66344293 and 66344302.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62000 + ... + 63060.

Almost surely, 2^66344330 is an apocalyptic number.

66344330 is an abundant number, since it is smaller than the sum of its proper divisors (66588334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66344330 is a wasteful number, since it uses less digits than its factorization.

66344330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131 (or 1118 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 29.

The square root of 66344330 is about 8145.2028826789. The cubic root of 66344330 is about 404.8255713835.

Adding to 66344330 its reverse (3344366), we get a palindrome (69688696).

The spelling of 66344330 in words is "sixty-six million, three hundred forty-four thousand, three hundred thirty".