66467830 has 64 divisors (see below), whose sum is σ = 143373888. Its totient is φ = 21864960.

The previous prime is 66467827. The next prime is 66467839. The reversal of 66467830 is 3876466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66467839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75352 + ... + 76228.

It is an arithmetic number, because the mean of its divisors is an integer number (2240217).

Almost surely, 2^66467830 is an apocalyptic number.

66467830 is an abundant number, since it is smaller than the sum of its proper divisors (76906058).

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

66467830 is a wasteful number, since it uses less digits than its factorization.

66467830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 66467830 is about 8152.7805072871. The cubic root of 66467830 is about 405.0766100058.

The spelling of 66467830 in words is "sixty-six million, four hundred sixty-seven thousand, eight hundred thirty".