66900704 has 48 divisors (see below), whose sum is σ = 143850672. Its totient is φ = 30440448.

The previous prime is 66900703. The next prime is 66900719. The reversal of 66900704 is 40700966.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66900703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29267 + ... + 31469.

It is an arithmetic number, because the mean of its divisors is an integer number (2996889).

Almost surely, 2^66900704 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 66900704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71925336).

66900704 is an abundant number, since it is smaller than the sum of its proper divisors (76949968).

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

66900704 is a wasteful number, since it uses less digits than its factorization.

66900704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2299 (or 2291 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 66900704 is about 8179.2850543308. The cubic root of 66900704 is about 405.9540663250.

The spelling of 66900704 in words is "sixty-six million, nine hundred thousand, seven hundred four".