66073870 has 16 divisors (see below), whose sum is σ = 119184048. Its totient is φ = 26373760.

The previous prime is 66073853. The next prime is 66073873. The reversal of 66073870 is 7837066.

66073870 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66073873) by changing a digit.

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, 1819 + ... + 11638.

It is an arithmetic number, because the mean of its divisors is an integer number (7449003).

Almost surely, 2^66073870 is an apocalyptic number.

66073870 is a deficient number, since it is larger than the sum of its proper divisors (53110178).

66073870 is a wasteful number, since it uses less digits than its factorization.

66073870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13955.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 66073870 is about 8128.5835174402. The cubic root of 66073870 is about 404.2747167567.

The spelling of 66073870 in words is "sixty-six million, seventy-three thousand, eight hundred seventy".