66573670 has 8 divisors (see below), whose sum is σ = 119832624. Its totient is φ = 26629464.

The previous prime is 66573641. The next prime is 66573673. The reversal of 66573670 is 7637566.

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 (66573673) 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, 3328674 + ... + 3328693.

It is an arithmetic number, because the mean of its divisors is an integer number (14979078).

Almost surely, 2^66573670 is an apocalyptic number.

66573670 is a deficient number, since it is larger than the sum of its proper divisors (53258954).

66573670 is a wasteful number, since it uses less digits than its factorization.

66573670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6657374.

The product of its (nonzero) digits is 158760, while the sum is 40.

The square root of 66573670 is about 8159.2689623520. The cubic root of 66573670 is about 405.2915037977.

The spelling of 66573670 in words is "sixty-six million, five hundred seventy-three thousand, six hundred seventy".