66496309 has 8 divisors (see below), whose sum is σ = 72728928. Its totient is φ = 60294960.

The previous prime is 66496307. The next prime is 66496321. The reversal of 66496309 is 90369466.

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

It is not a de Polignac number, because 66496309 - 2¹ = 66496307 is a prime.

It is a super-2 number, since 2×66496309² = 8843518221246962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66496303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3247 + ... + 11980.

It is an arithmetic number, because the mean of its divisors is an integer number (9091116).

Almost surely, 2^66496309 is an apocalyptic number.

It is an amenable number.

66496309 is a deficient number, since it is larger than the sum of its proper divisors (6232619).

66496309 is a wasteful number, since it uses less digits than its factorization.

66496309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15635.

The product of its (nonzero) digits is 209952, while the sum is 43.

The square root of 66496309 is about 8154.5269022795. The cubic root of 66496309 is about 405.1344551797.

The spelling of 66496309 in words is "sixty-six million, four hundred ninety-six thousand, three hundred nine".