66976055 has 8 divisors (see below), whose sum is σ = 80480400. Its totient is φ = 53508096.

The previous prime is 66976009. The next prime is 66976067. The reversal of 66976055 is 55067966.

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 66976055 - 2¹⁰ = 66975031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66975997 and 66976015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4865 + ... + 12554.

It is an arithmetic number, because the mean of its divisors is an integer number (10060050).

Almost surely, 2^66976055 is an apocalyptic number.

66976055 is a deficient number, since it is larger than the sum of its proper divisors (13504345).

66976055 is a wasteful number, since it uses less digits than its factorization.

66976055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18193.

The product of its (nonzero) digits is 340200, while the sum is 44.

The square root of 66976055 is about 8183.8899674910. The cubic root of 66976055 is about 406.1064193195.

The spelling of 66976055 in words is "sixty-six million, nine hundred seventy-six thousand, fifty-five".