66802030 has 8 divisors (see below), whose sum is σ = 120243672. Its totient is φ = 26720808.

The previous prime is 66802013. The next prime is 66802031. The reversal of 66802030 is 3020866.

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

It is a super-2 number, since 2×66802030² = 8925022424241800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66801986 and 66802004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66802031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3340092 + ... + 3340111.

It is an arithmetic number, because the mean of its divisors is an integer number (15030459).

Almost surely, 2^66802030 is an apocalyptic number.

66802030 is a deficient number, since it is larger than the sum of its proper divisors (53441642).

66802030 is a wasteful number, since it uses less digits than its factorization.

66802030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6680210.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 66802030 is about 8173.2508832165. The cubic root of 66802030 is about 405.7543832168.

Adding to 66802030 its reverse (3020866), we get a palindrome (69822896).

The spelling of 66802030 in words is "sixty-six million, eight hundred two thousand, thirty".