66704337547 has 8 divisors (see below), whose sum is σ = 69769867680. Its totient is φ = 63652585920.

The previous prime is 66704337541. The next prime is 66704337563. The reversal of 66704337547 is 74573340766.

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-66704337547 is a prime.

It is a super-2 number, since 2×66704337547² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66704337494 and 66704337503.

It is not an unprimeable number, because it can be changed into a prime (66704337541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3434722 + ... + 3454087.

It is an arithmetic number, because the mean of its divisors is an integer number (8721233460).

Almost surely, 2^66704337547 is an apocalyptic number.

66704337547 is a deficient number, since it is larger than the sum of its proper divisors (3065530133).

66704337547 is a wasteful number, since it uses less digits than its factorization.

66704337547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6889253.

The product of its (nonzero) digits is 8890560, while the sum is 52.

The spelling of 66704337547 in words is "sixty-six billion, seven hundred four million, three hundred thirty-seven thousand, five hundred forty-seven".