66157030 has 32 divisors (see below), whose sum is σ = 127300896. Its totient is φ = 24666624.

The previous prime is 66156989. The next prime is 66157051. The reversal of 66157030 is 3075166.

It is a self number, because there is not a number n which added to its sum of digits gives 66157030.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 16372 + ... + 20008.

It is an arithmetic number, because the mean of its divisors is an integer number (3978153).

Almost surely, 2^66157030 is an apocalyptic number.

66157030 is a deficient number, since it is larger than the sum of its proper divisors (61143866).

66157030 is a wasteful number, since it uses less digits than its factorization.

66157030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3768.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 66157030 is about 8133.6971913147. The cubic root of 66157030 is about 404.4442512030. Note that the first 3 decimals are identical.

The spelling of 66157030 in words is "sixty-six million, one hundred fifty-seven thousand, thirty".