66770704 has 120 divisors (see below), whose sum is σ = 175474880. Its totient is φ = 23950080.

The previous prime is 66770689. The next prime is 66770723. The reversal of 66770704 is 40707766.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 175987 + ... + 176365.

Almost surely, 2^66770704 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 66770704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87737440).

66770704 is an abundant number, since it is smaller than the sum of its proper divisors (108704176).

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

66770704 is a wasteful number, since it uses less digits than its factorization.

66770704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429 (or 412 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 37.

The square root of 66770704 is about 8171.3342851703. The cubic root of 66770704 is about 405.6909487715.

The spelling of 66770704 in words is "sixty-six million, seven hundred seventy thousand, seven hundred four".