66344630 has 16 divisors (see below), whose sum is σ = 130276944. Its totient is φ = 24125280.

The previous prime is 66344617. The next prime is 66344633. The reversal of 66344630 is 3644366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66344633) 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, 301457 + ... + 301676.

It is an arithmetic number, because the mean of its divisors is an integer number (8142309).

Almost surely, 2^66344630 is an apocalyptic number.

66344630 is a deficient number, since it is larger than the sum of its proper divisors (63932314).

66344630 is a wasteful number, since it uses less digits than its factorization.

66344630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603151.

The product of its (nonzero) digits is 31104, while the sum is 32.

The square root of 66344630 is about 8145.2212984056. The cubic root of 66344630 is about 404.8261815712.

Adding to 66344630 its reverse (3644366), we get a palindrome (69988996).

The spelling of 66344630 in words is "sixty-six million, three hundred forty-four thousand, six hundred thirty".