66495830 has 8 divisors (see below), whose sum is σ = 119692512. Its totient is φ = 26598328.

The previous prime is 66495817. The next prime is 66495833. The reversal of 66495830 is 3859466.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66495833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3324782 + ... + 3324801.

It is an arithmetic number, because the mean of its divisors is an integer number (14961564).

Almost surely, 2^66495830 is an apocalyptic number.

66495830 is a deficient number, since it is larger than the sum of its proper divisors (53196682).

66495830 is a wasteful number, since it uses less digits than its factorization.

66495830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6649590.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 66495830 is about 8154.4975320372. The cubic root of 66495830 is about 405.1334823946.

The spelling of 66495830 in words is "sixty-six million, four hundred ninety-five thousand, eight hundred thirty".