66476216 has 8 divisors (see below), whose sum is σ = 124642920. Its totient is φ = 33238104.

The previous prime is 66476173. The next prime is 66476219. The reversal of 66476216 is 61267466.

It is a tau number, because it is divible by the number of its divisors (8).

It is a pancake number, because a pancake can be divided into 66476216 parts by 11530 straight cuts.

It is a self number, because there is not a number n which added to its sum of digits gives 66476216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66476219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4154756 + ... + 4154771.

It is an arithmetic number, because the mean of its divisors is an integer number (15580365).

Almost surely, 2^66476216 is an apocalyptic number.

It is an amenable number.

66476216 is a deficient number, since it is larger than the sum of its proper divisors (58166704).

66476216 is a wasteful number, since it uses less digits than its factorization.

66476216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8309533 (or 8309529 counting only the distinct ones).

The product of its digits is 72576, while the sum is 38.

The square root of 66476216 is about 8153.2947941308. The cubic root of 66476216 is about 405.0936449614.

The spelling of 66476216 in words is "sixty-six million, four hundred seventy-six thousand, two hundred sixteen".