66080215 has 8 divisors (see below), whose sum is σ = 79556400. Its totient is φ = 52690752.

The previous prime is 66080171. The next prime is 66080227. The reversal of 66080215 is 51208066.

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 66080215 - 2¹³ = 66072023 is a prime.

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, 19990 + ... + 23059.

It is an arithmetic number, because the mean of its divisors is an integer number (9944550).

Almost surely, 2^66080215 is an apocalyptic number.

66080215 is a deficient number, since it is larger than the sum of its proper divisors (13476185).

66080215 is a wasteful number, since it uses less digits than its factorization.

66080215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43361.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 66080215 is about 8128.9737974728. The cubic root of 66080215 is about 404.2876570258.

The spelling of 66080215 in words is "sixty-six million, eighty thousand, two hundred fifteen".