66056347 has 8 divisors (see below), whose sum is σ = 75585536. Its totient is φ = 56550312.

The previous prime is 66056317. The next prime is 66056377. The reversal of 66056347 is 74365066.

It is an interprime number because it is at equal distance from previous prime (66056317) and next prime (66056377).

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

It is not a de Polignac number, because 66056347 - 2⁷ = 66056219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66056317) 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, 838 + ... + 11524.

It is an arithmetic number, because the mean of its divisors is an integer number (9448192).

Almost surely, 2^66056347 is an apocalyptic number.

66056347 is a deficient number, since it is larger than the sum of its proper divisors (9529189).

66056347 is a wasteful number, since it uses less digits than its factorization.

66056347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11577.

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 66056347 is about 8127.5055828957. The cubic root of 66056347 is about 404.2389752843.

The spelling of 66056347 in words is "sixty-six million, fifty-six thousand, three hundred forty-seven".