66110620 has 24 divisors (see below), whose sum is σ = 146999664. Its totient is φ = 24888576.

The previous prime is 66110587. The next prime is 66110647. The reversal of 66110620 is 2601166.

66110620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×66110620² = 8741228153568800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66110591 and 66110600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96882 + ... + 97561.

It is an arithmetic number, because the mean of its divisors is an integer number (6124986).

Almost surely, 2^66110620 is an apocalyptic number.

It is an amenable number.

66110620 is an abundant number, since it is smaller than the sum of its proper divisors (80889044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66110620 is a wasteful number, since it uses less digits than its factorization.

66110620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194469 (or 194467 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 66110620 is about 8130.8437446553. The cubic root of 66110620 is about 404.3496548132.

Adding to 66110620 its reverse (2601166), we get a palindrome (68711786).

The spelling of 66110620 in words is "sixty-six million, one hundred ten thousand, six hundred twenty".