66670753 has 8 divisors (see below), whose sum is σ = 74308320. Its totient is φ = 59446080.

The previous prime is 66670729. The next prime is 66670759. The reversal of 66670753 is 35707666.

66670753 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66670753 is a prime.

It is a super-3 number, since 3×66670753³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66670759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102883 + ... + 103528.

It is an arithmetic number, because the mean of its divisors is an integer number (9288540).

Almost surely, 2^66670753 is an apocalyptic number.

It is an amenable number.

66670753 is a deficient number, since it is larger than the sum of its proper divisors (7637567).

66670753 is a wasteful number, since it uses less digits than its factorization.

66670753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206447.

The product of its (nonzero) digits is 158760, while the sum is 40.

The square root of 66670753 is about 8165.2160412325. The cubic root of 66670753 is about 405.4884175039.

The spelling of 66670753 in words is "sixty-six million, six hundred seventy thousand, seven hundred fifty-three".