66530798 has 8 divisors (see below), whose sum is σ = 101059680. Its totient is φ = 32844240.

The previous prime is 66530759. The next prime is 66530831. The reversal of 66530798 is 89703566.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210383 + ... + 210698.

It is an arithmetic number, because the mean of its divisors is an integer number (12632460).

Almost surely, 2^66530798 is an apocalyptic number.

66530798 is a deficient number, since it is larger than the sum of its proper divisors (34528882).

66530798 is a wasteful number, since it uses less digits than its factorization.

66530798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421162.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 66530798 is about 8156.6413431020. The cubic root of 66530798 is about 405.2044854688.

The spelling of 66530798 in words is "sixty-six million, five hundred thirty thousand, seven hundred ninety-eight".