66910704 has 160 divisors (see below), whose sum is σ = 213319680. Its totient is φ = 17646336.

The previous prime is 66910693. The next prime is 66910769. The reversal of 66910704 is 40701966.

It is a happy number.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 299937 + ... + 300159.

It is an arithmetic number, because the mean of its divisors is an integer number (1333248).

Almost surely, 2^66910704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66910704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106659840).

66910704 is an abundant number, since it is smaller than the sum of its proper divisors (146408976).

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

66910704 is a wasteful number, since it uses less digits than its factorization.

66910704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 301 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 66910704 is about 8179.8963318614. The cubic root of 66910704 is about 405.9742920136.

It can be divided in two parts, 669 and 10704, that multiplied together give a square (7160976 = 2676²).

The spelling of 66910704 in words is "sixty-six million, nine hundred ten thousand, seven hundred four".