66707404 has 24 divisors (see below), whose sum is σ = 124905200. Its totient is φ = 31078080.

The previous prime is 66707359. The next prime is 66707413. The reversal of 66707404 is 40470766.

It is a self number, because there is not a number n which added to its sum of digits gives 66707404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2559 + ... + 11830.

Almost surely, 2^66707404 is an apocalyptic number.

It is an amenable number.

66707404 is a deficient number, since it is larger than the sum of its proper divisors (58197796).

66707404 is a wasteful number, since it uses less digits than its factorization.

66707404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14473 (or 14471 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 66707404 is about 8167.4600703034. The cubic root of 66707404 is about 405.5627071180.

It can be divided in two parts, 66 and 707404, that multiplied together give a palindrome (46688664).

The spelling of 66707404 in words is "sixty-six million, seven hundred seven thousand, four hundred four".