66629495 has 8 divisors (see below), whose sum is σ = 80919216. Its totient is φ = 52661056.

The previous prime is 66629491. The next prime is 66629527. The reversal of 66629495 is 59492666.

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

It is a cyclic number.

It is not a de Polignac number, because 66629495 - 2² = 66629491 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66629491) by changing a digit.

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, 79862 + ... + 80691.

It is an arithmetic number, because the mean of its divisors is an integer number (10114902).

Almost surely, 2^66629495 is an apocalyptic number.

66629495 is a deficient number, since it is larger than the sum of its proper divisors (14289721).

66629495 is a wasteful number, since it uses less digits than its factorization.

66629495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160641.

The product of its digits is 699840, while the sum is 47.

The square root of 66629495 is about 8162.6892014826. The cubic root of 66629495 is about 405.4047571655.

The spelling of 66629495 in words is "sixty-six million, six hundred twenty-nine thousand, four hundred ninety-five".