66530355 has 8 divisors (see below), whose sum is σ = 106448592. Its totient is φ = 35482848.

The previous prime is 66530327. The next prime is 66530369. The reversal of 66530355 is 55303566.

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

It is not a de Polignac number, because 66530355 - 2⁵ = 66530323 is a prime.

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, 2217664 + ... + 2217693.

It is an arithmetic number, because the mean of its divisors is an integer number (13306074).

Almost surely, 2^66530355 is an apocalyptic number.

66530355 is a deficient number, since it is larger than the sum of its proper divisors (39918237).

66530355 is a wasteful number, since it uses less digits than its factorization.

66530355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4435365.

The product of its (nonzero) digits is 40500, while the sum is 33.

The square root of 66530355 is about 8156.6141872716. The cubic root of 66530355 is about 405.2035861060.

The spelling of 66530355 in words is "sixty-six million, five hundred thirty thousand, three hundred fifty-five".