66227847 has 8 divisors (see below), whose sum is σ = 100918656. Its totient is φ = 37844472.

The previous prime is 66227839. The next prime is 66227881. The reversal of 66227847 is 74872266.

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

It is not a de Polignac number, because 66227847 - 2³ = 66227839 is a prime.

It is a super-2 number, since 2×66227847² = 8772255436510818, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66227799 and 66227808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66227807) 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, 1576833 + ... + 1576874.

It is an arithmetic number, because the mean of its divisors is an integer number (12614832).

Almost surely, 2^66227847 is an apocalyptic number.

66227847 is a deficient number, since it is larger than the sum of its proper divisors (34690809).

66227847 is a wasteful number, since it uses less digits than its factorization.

66227847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3153717.

The product of its digits is 225792, while the sum is 42.

The square root of 66227847 is about 8138.0493362968. The cubic root of 66227847 is about 404.5885105758.

The spelling of 66227847 in words is "sixty-six million, two hundred twenty-seven thousand, eight hundred forty-seven".