66536347 has 8 divisors (see below), whose sum is σ = 70146560. Its totient is φ = 62937000.

The previous prime is 66536329. The next prime is 66536383. The reversal of 66536347 is 74363566.

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 66536347 - 2¹⁵ = 66503579 is a prime.

It is a super-3 number, since 3×66536347³ (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 (66536647) 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, 11938 + ... + 16600.

It is an arithmetic number, because the mean of its divisors is an integer number (8768320).

Almost surely, 2^66536347 is an apocalyptic number.

66536347 is a deficient number, since it is larger than the sum of its proper divisors (3610213).

66536347 is a wasteful number, since it uses less digits than its factorization.

66536347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5433.

The product of its digits is 272160, while the sum is 40.

The square root of 66536347 is about 8156.9814882713. The cubic root of 66536347 is about 405.2157505132.

The spelling of 66536347 in words is "sixty-six million, five hundred thirty-six thousand, three hundred forty-seven".