66707398 has 8 divisors (see below), whose sum is σ = 100199808. Its totient is φ = 33307464.

The previous prime is 66707359. The next prime is 66707413. The reversal of 66707398 is 89370766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 21286 + ... + 24217.

It is an arithmetic number, because the mean of its divisors is an integer number (12524976).

Almost surely, 2^66707398 is an apocalyptic number.

66707398 is a deficient number, since it is larger than the sum of its proper divisors (33492410).

66707398 is a wasteful number, since it uses less digits than its factorization.

66707398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46238.

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 66707398 is about 8167.4597029921. The cubic root of 66707398 is about 405.5626949585.

The spelling of 66707398 in words is "sixty-six million, seven hundred seven thousand, three hundred ninety-eight".